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38th International Cosmic Ray Conference, ICRC 2023

作者： Tamura, T. Akaike, Y. Kobayashi, K. Adriani, O. Asano, K. Asaoka, Y. Berti, E. Bigongiari, G. Binns, W.R. Bongi, M. Brogi, P. Bruno, A. Cannady, N. Castellini, G. Checchia, C. Cherry, M.L. Collazuol, G. de Nolfo, G.A. Ebisawa, K. Ficklin, A.W. Fuke, H. Gonzi, S. Guzik, T.G. Hams, T. Hibino, K. Ichimura, M. Ioka, K. Ishizaki, W. Israel, M.H. Kasahara, K. Kataoka, J. Kataoka, R. Katayose, Y. Kato, C. Kawanaka, N. Kawakubo, Y. Kohri, K. Krawczynski, H.S. Krizmanic, J.F. Maestro, P. Marrocchesi, P.S. Messineo, A.M. Mitchell, J.W. Miyake, S. Moiseev, A.A. Mori, M. Mori, N. Motz, H.M. Munakata, K. Nakahira, S. Nishimura, J. Okuno, S. Ormes, J.F. Ozawa, S. Pacini, L. Papini, P. Rauch, B.F. Ricciarini, S.B. Sakai, K. Sakamoto, T. Sasaki, M. Shimizu, Y. Shiomi, A. Spillantini, P. Stolzi, F. Sugita, S. Sulaj, A. Takita, M. Tamura, T. Terasawa, T. Torii, S. Tsunesada, Y. Uchihori, Y. Vannuccini, E. Wefel, J.P. Yamaoka, K. Yanagita, S. Yoshida, A. Yoshida, K. Zober, W.V. Kanagawa University Faculty of Engineering Department of Applied Physics 3-27-1 Rokkakubashi Kanagawa-ku Yokohama Japan Department of Physics University of Florence Via Sansone 1 Sesto Fiorentino50019 Italy INFN Sezione di Firenze Via Sansone 1 Sesto Fiorentino50019 Italy Waseda Research Institute for Science and Engineering Waseda University 17 Kikuicho Shinjuku Tokyo162-0044 Japan JEM Utilization Center Human Spaceflight Technology Directorate Japan Aerospace Exploration Agency 2-1-1 Sengen Ibaraki Tsukuba305-8505 Japan Institute for Cosmic Ray Research The University of Tokyo 5-1-5 Kashiwa-no-Ha Kashiwa Chiba277-8582 Japan Via Madonna del Piano 10 Sesto Fiorentino50019 Italy Department of Physical Sciences Earth and Environment University of Siena via Roma 56 Siena53100 Italy INFN Sezione di Pisa Polo Fibonacci Largo B. Pontecorvo 3 Pisa56127 Italy Department of Physics McDonnell Center for the Space Sciences Washington University One Brookings Drive St. LouisMO63130-4899 United States Heliospheric Physics Laboratory NASA GSFC GreenbeltMD20771 United States Center for Space Sciences and Technology University of Maryland Baltimore County 1000 Hilltop Circle BaltimoreMD21250 United States Astroparticle Physics Laboratory NASA GSFC GreenbeltMD20771 United States Center for Research and Exploration in Space Sciences and Technology NASA GSFC GreenbeltMD20771 United States Department of Physics and Astronomy Louisiana State University 202 Nicholson Hall Baton RougeLA70803 United States Department of Physics and Astronomy University of Padova Via Marzolo 8 Padova35131 Italy INFN Sezione di Padova Via Marzolo 8 Padova35131 Italy Institute of Space and Astronautical Science Japan Aerospace Exploration Agency 3-1-1 Yoshinodai Chuo Kanagawa Sagamihara252-5210 Japan Kanagawa University 3-27-1 Rokkakubashi Kanagawa Kanagawa Yokohama221-8686 Japan Faculty of Science and Technology Graduate School of Science a

The CALorimetric Electron Telescope (CALET) has successfully been carrying out cosmic-ray observations on the International Space Station since October, 2015. CALET directly measures the cosmic-ray electron spectrum in the energy range of 1 GeV to 20 TeV with a 2 % energy resolution above 30 GeV. In addition, the instrument can measure the spectrum of gamma rays well into the TeV range, and the spectra of protons and nuclei up to a PeV. The scientific operations are implemented by taking into account orbital variations of geomagnetic rigidity cutoff. Scheduled command sequences are used to control the CALET observation modes on orbit. The high-energy (>10 GeV) trigger mode is always active for maintaining maximum exposure to high-energy electrons and other high-energy shower events. Also, around the ISS orbit, calibration data acquisition by, for example, recording pedestal and penetrating particle events, a low-energy electron trigger mode operating at high geomagnetic latitude, a low-energy gamma-ray trigger mode operating at low geomagnetic latitude, and an ultra-heavy trigger mode, are scheduled. As of June 30, 2023, the total observation time is 2818 days with a live time fraction of the total time around 86 %. Nearly 1.86 billion events are collected with the high-energy trigger. © Copyright owned by the author(s) under the terms of the Creative Commons.

关键词： Cosmology

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Panoramic mapping of phonon transport from ultrafast electron diffraction and machine learning

arXiv

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arXiv 2022年

作者： Chen, Zhantao Shen, Xiaozhe Andrejevic, Nina Liu, Tongtong Luo, Duan Nguyen, Thanh Drucker, Nathan C. Kozina, Michael E. Song, Qichen Hua, Chengyun Chen, Gang Wang, Xijie Kong, Jing Li, Mingda Quantum Measurement Group MIT CambridgeMA02139 United States Department Of Mechanical Engineering MIT CambridgeMA02139 United States SLAC National Accelerator Laboratory Menlo ParkCA94205 United States Department Of Materials Science And Engineering MIT CambridgeMA02139 United States Department Of Physics MIT CambridgeMA02139 United States Department Of Nuclear Science And Engineering MIT CambridgeMA02139 United States John A. Paulson School Of Engineering And Applied Science Harvard University CambridgeMA02138 United States Materials Science And Technology Division Oak Ridge National Laboratory Oak RidgeTN37831 United States Department Of Electrical Engineering And Computer Science MIT CambridgeMA02139 United States

One central challenge in understanding phonon thermal transport is a lack of experimental tools to investigate mode-based transport information. Although recent advances in computation lead to mode-based information, it is hindered by unknown defects in bulk region and at interfaces. Here we present a framework that can reveal microscopic phonon transport information in heterostructures, integrating state-of-the-art ultrafast electron diffraction (UED) with advanced scientific machine learning. Taking advantage of the dual temporal and reciprocal-space resolution in UED, we are able to reliably recover the frequency-dependent interfacial transmittance with possible extension to frequency-dependent relaxation times of the heterostructure. This enables a direct reconstruction of real-space, real-time, frequency-resolved phonon dynamics across an interface. Our work provides a new pathway to experimentally probe phonon transport mechanisms with unprecedented details. Copyright © 2022, The Authors. All rights reserved.

关键词： Phonons

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Design of high-energy X-ray conversion target based on linear electron accelerator

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applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine 2025年 224卷 111951页

作者： Hongchao Yang Xingfan Yang Yinghong Tang Heng Dai Pengcheng Li Guohua Liang Yadong Wu Xianguo Tuo Qibiao Wang College of Nuclear Technology and Automation Engineering Chengdu University of Technology East Third Road 1 Erxian Bridge 610059 Chengdu China Institute of Applied Electronics China Academy of Engineering Physics Mian Shan Road 64 621900 Mianyang China. College of Nuclear Technology and Automation Engineering Chengdu University of Technology East Third Road 1 Erxian Bridge 610059 Chengdu China. School of Computer Science and Engineering Sichuan University of Science and Engineering Huixing Road 519 Ziliujing District 643000 Zigong China. School of Physics and Electronic Engineering Sichuan University of Science and Engineering Huixing Road 519 Ziliujing District 643000 Zigong China. School of Physics and Electronic Engineering Sichuan University of Science and Engineering Huixing Road 519 Ziliujing District 643000 Zigong China. Electronic address: wangqibiao@***.

High-energy X-rays can be employed to inspect fuel elements, even weld seams, cracks, and internal structural deformations of the components due to their density-sensitive characteristics and strong penetration capabilities. The quality of these X-rays is determined by various factors such as the X-ray conversion target, the cooling system for the conversion target, and the filter type, thereby influencing the detection accuracy. This study was conducted using an electron linear accelerator with an energy of 10 MeV and an average current of 150 μA. Firstly, we designed the conversion target material and geometry structure by Monte Carlo method. The results indicate that the optimal target material is tungsten and the optimum shape of the conversion target is a cylinder with dimensions of Φ 40 × 2.2 mm. Second, finite element analysis was applied to design the conversion target cooling system. After 60 min of electron beam irradiation, the local maximum temperature of the conversion target is approximately 1330 °C. Lastly, theoretical analysis and Monte Carlo simulations were used to design the X-ray filters. The result demonstrates that a double-layer filter consisting of 8 mm bismuth and 4 mm iron can increase the proportion of high-energy X-rays by 13.89 ± 0.05 %. Finally, the results of using the attenuation method to measure the X-ray energy spectrum produced by an electron linear accelerator indicate that without a filter 78.81 % of the X-rays are above 1 MeV and with a filter this proportion increases to 80.55 %.

关键词： Attenuation curves COMSOL Conversion target Geant4 High energy X-ray nuclear fuel

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Virtual Node Graph Neural Network for Full Phonon Prediction

arXiv

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arXiv 2023年

作者： Okabe, Ryotaro Chotrattanapituk, Abhijatmedhi Boonkird, Artittaya Andrejevic, Nina Fu, Xiang Jaakkola, Tommi S. Song, Qichen Nguyen, Thanh Drucker, Nathan Mu, Sai Liao, Bolin Cheng, Yongqiang Li, Mingda Quantum Measurement Group Massachusetts Institute of Technology CambridgeMA United States Department of Chemistry Massachusetts Institute of Technology CambridgeMA United States Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology CambridgeMA United States Department of Nuclear Science and Engineering Massachusetts Institute of Technology CambridgeMA United States Argonne National Laboratory LemontIL United States Department of Chemistry and Chemical Biology Harvard University CambridgeMA United States Applied Physics School of Engineering and Applied Sciences Harvard University CambridgeMA United States Department of Physics and Astronomy University of South Carolina ColumbiaSC United States Department of Materials University of California Santa Barbara Santa BarbaraCA United States Chemical Spectroscopy Group Spectroscopy Section Neutron Scattering Division Oak Ridge National Laboratory Oak RidgeTN United States

The structure-property relationship plays a central role in materials science. Understanding the structure-property relationship in solid-state materials is crucial for structure design with optimized properties. The past few years witnessed remarkable progress in correlating structures with properties in crystalline materials, such as machine learning methods and particularly graph neural networks as a natural representation of crystal structures. However, significant challenges remain, including predicting properties with complex unit cells input and material-dependent, variable-length output. Here we present the virtual node graph neural network to address the challenges. By developing three types of virtual node approaches - the vector, matrix, and momentum-dependent matrix virtual nodes, we achieve direct prediction of Γ-phonon spectra and full dispersion only using atomic coordinates as input. We validate the phonon bandstructures on various alloy systems, and further build a Γ-phonon database containing over 146,000 materials in the Materials Project. Our work provides an avenue for rapid and high-quality prediction of phonon spectra and bandstructures in complex materials, and enables materials design with superior phonon properties for energy applications. The virtual node augmentation of graph neural networks also sheds light on designing other functional properties with a new level of flexibility. © 2023, CC BY.

关键词： Forecasting

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Terahertz Cavity Phonon Polaritons in the Deep-Strong Coupling Regime

Terahertz Cavity Phonon Polaritons in the Deep-Strong Coupli...

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International Conference on Infrared and Millimeter Waves

作者： Andrey Baydin Manukumara Manjappa Sobhan Subhra Mishra Hongjing Xu Jacques Doumani Fuyang Tay Dasom Kim Felix G. G. Hernandez Paulo H. O. Rappl Eduardo Abramof Ranjan Singh Junichiro Kono Department of Electrical and Computer Engineering Rice University Houston TX USA Smalley-Curl Institute Rice University Houston TX USA Department of Instrumentation and Applied Physics Indian Institute of Science Bangalore India Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University Singapore Department of Physics and Astronomy Rice University Houston TX USA Applied Physics Graduate Program Smalley-Curl Institute Rice University Houston TX USA Instituto de Física Universidade de São Paulo São Paulo SP Brazil Laboratório Associado de Sensores e Materiais Instituto Nacional de Pesquisas Espaciais São José dos ampos SP Brazil Center for Disruptive Photonic Technologies The Photonics Institute Nanyang Technological University Singapore Department of Material Science and NanoEngineering Rice University Houston TX USA

We have studied the resonant and nonperturbative coupling of transverse optical phonons in lead telluride with photons in small-mode-volume terahertz cavities, observing a giant vacuum Rabi splitting on the order of the uncoupled phonon and cavity frequencies. Our terahertz time-domain spectroscopy experimental data, systematically collected as a function of sample thickness, temperature, and cavity length, can be well reproduced by our electromagnetic simulations. These results demonstrate that this uniquely tunable platform is promising for realizing and understanding predicted cavity-vacuum-induced ferroelectric instabilities, as well as for exploring applications of light-matter coupling in the ultra-and deep-strong coupling regimes in quantum technology.

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Deep-Strong Coupling between Cavity Photons and Terahertz TO Phonons in PbTe

Deep-Strong Coupling between Cavity Photons and Terahertz TO...

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Conference on Lasers and Electro-Optics (CLEO)

作者： Andrey Baydin Manukumara Manjappa Sobhan Subhra Mishra Hongjing Xu Fuyang Tay Dasom Kim Felix G. G. Hernandez Paulo H. O. Rappl Eduardo Abramof Ranjan Singh Junichiro Kono Department of Electrical and Computer Engineering Rice University Houston Texas USA Smalley-Curl Institute Rice University Houston Texas USA Instrumentation and Applied Physics Department Indian Institute of Science Bangalore India Center for Disruptive Photonic Technologies The Photonics Institute Nanyang Technological University Singapore Department of Physics and Astronomy Rice University Houston Texas USA Applied Physics Graduate Program Smalley-Curl Institute Rice University Houston Texas USA Instituto de Física Universidade de São Paulo São Paulo SP Brazil Laboratório Associado de Sensores e Materiais Instituto Nacional de Pesquisas Espaciais São José dos Campos SP Brazil Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University Singapore Department of Material Science and NanoEngineering Rice University Houston Texas USA

We have investigated the resonant coupling of photons with TO phonons in lead telluride in small-mode-volume terahertz cavities, observing a giant vacuum Rabi splitting on the order of the bare cavity–phonon frequency.

ISBN: (纸本)9781957171258

关键词： Electric fields Numerical simulation Optical constants Photons Physical vapor deposition Terahertz spectroscopy

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PANDORA Project for the study of photonuclear reactions below

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The European Physical Journal A 2023年第9期59卷 1-21页

作者： Tamii, A. Pellegri, L. Söderström, P.-A. Allard, D. Goriely, S. Inakura, T. Khan, E. Kido, E. Kimura, M. Litvinova, E. Nagataki, S. Neumann-Cosel, P. von Pietralla, N. Shimizu, N. Tsoneva, N. Utsuno, Y. Adachi, S. Adsley, P. Bahini, A. Balabanski, D. Baret, B. Bekker, J. A. C. Binda, S. D. Boicu, E. Bracco, A. Brandherm, I. Brezeanu, M. Brummer, J. W. Camera, F. Crespi, F. C. L. Dalal, R. Donaldson, L. M. Fujikawa, Y. Furuno, T. Haoning, H. Higuchi, R. Honda, Y. Gavrilescu, A. Inoue, A. Isaak, J. Jivan, H. Jones, P. Jongile, S. Just, O. Kawabata, T. Khumalo, T. Kiener, J. Kleemann, J. Kobayashi, N. Koshio, Y. Kuşoğlu, A. Li, K. C. W. Malatji, K. L. Molaeng, R. E. Motoki, H. Murata, M. Netshiya, A. A. Neveling, R. Niina, R. Okamoto, S. Ota, S. Papst, O. Parizot, E. Petruse, T. Reen, M. S. Ring, P. Sakanashi, K. Sideras-Haddad, E. Siem, S. Spall, M. Suda, T. Sudo, T. Taniguchi, Y. Tatischeff, V. Utsunomiya, H. Wang, H. Werner, V. Wibowo, H. Wiedeking, M. Wieland, O. Xu, Y. Yang, Z. H. Research Center for Nuclear Physics (RCNP) Osaka University Ibaraki Japan Institute for Radiation Sciences (IRS) Osaka University Toyonaka Japan Department of Physics Osaka University Toyonaka Japan School of Physics University of the Witwatersrand Johannesburg South Africa Themba Laboratory for Accelerator Based Sciences Somerset West South Africa Extreme Light Infrastructure-Nuclear Physics (ELI-NP)/Horia Hulubei National Institute for Physics and Nuclear Engineering (IFIN-HH) Bucharest-Măgurele Romania Laboratoire Astroparticule et Cosmologie CNRS Université Paris Cité Paris France Institut d’Astronomie et d’Astrophysique Université Libre de Bruxelles Brussels Belgium Tokyo Institute of Technology Tokyo Japan IJCLab CNRS/IN2P3 Université Paris-Saclay Orsay Cedex France RIKEN Wako Japan Department of Physics Hokkaido University Sapporo Japan Faculty of Science Japan and Nuclear Reaction Data Centre Hokkaido University Sapporo Japan Department of Physics Western Michigan University Kalamazoo USA Institut für Kernphysik Technische Universität Darmstadt Darmstadt Germany Center for Computational Sciences University of Tsukuba Tsukuba Japan Advanced Science Research Center Japan Atomic Energy Agency Tokai Japan Cyclotron and Radioisotope Center Tohoku University Sendai Japan Department of Physics and Astronomy Texas A &M University College Station USA Cyclotron Institute Texas A &M University College Station USA University of Bucharest Bucharest-Măgurele Romania Dipartimento di Fisica dell’Università degli Studi di Milano Milan Italy INFN Sezione di Milano Milan Italy Guru Jambheshwar University of Science and Technology Hisar India Department of Physics Kyoto University Kyoto Japan Politehnica University of Bucharest Bucharest Romania GSI Helmholtzzentrum für Schwerionenforschung Darmstadt Germany Department of Physics Okayama University Okayama Japan Department of Physics Faculty of Science Istanbul University Istanbul Turkey Depart

Photonuclear reactions of light nuclei below a mass of $$A=60$$ are planned to be studied experimentally and theoretically with the PANDORA (Photo-Absorption of Nuclei and Decay Observation for Reactions in Astrophysics) project. Two experimental methods, virtual photon excitation by proton scattering and real photo absorption by a high-brilliance $$\gamma $$ -ray beam produced by laser Compton scattering, will be applied to measure the photoabsorption cross sections and decay branching ratio of each decay channel as a function of the photon energy. Several nuclear models, e.g. anti-symmetrized molecular dynamics, mean-field and beyond-mean-field models, a large-scale shell model, and ab initio models, will be employed to predict the photonuclear reactions. The uncertainty in the model predictions will be evaluated based on the discrepancies between the model predictions and experimental data. The data and predictions will be implemented in the general reaction calculation code, TALYS. The results will be applied to the simulation of the photo-disintegration process of ultra-high-energy cosmic rays in inter-galactic propagation.

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Insulator-to-Metal Transition and Isotropic Gigantic Magnetoresistance in Layered Magnetic Semiconductors

arXiv

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arXiv 2024年

作者： Acharya, Gokul Neupane, Bimal Hsu, Chia-Hsiu Yang, Xian P. Graf, David Choi, Eun Sang Pandey, Krishna Un Nabi, Md Rafique Chhetri, Santosh Karki Basnet, Rabindra Rahman, Sumaya Wang, Jian Hu, Zhengxin Da, Bo H., Churchill G., Chang M.Z., Hasan Y., Wang J., Hu Department of Physics University of Arkansas FayettevilleAR United States Department of Physics University of North Texas DentonTX United States Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University Singapore Singapore Okinawa904-0495 Japan Department of Physics Princeton University PrincetonNJ United States National High Magnetic Field Lab TallahasseeFL United States Materials Science and Engineering Program Institute for Nanoscience and Engineering University of Arkansas FayettevilleAR United States MonArk NSF Quantum Foundry University of Arkansas FayettevilleAR United States Department of Chemistry & Physics University of Arkansas at Pine Bluff Pine BluffAR71603 United States Department of Chemistry and Biochemistry Wichita State University WichitaKS United States Ibaraki Tsukuba Japan Department of Chemistry University of Cambridge Cambridge United Kingdom Princeton Institute for Science and Technology of Materials Princeton University PrincetonNJ United States Lawrence Berkeley National Laboratory BerkeleyCA United States

Magnetotransport, the response of electrical conduction to external magnetic field, acts as an important tool to reveal fundamental concepts behind exotic phenomena and plays a key role in enabling spintronic applications. Magnetotransport is generally sensitive to magnetic field orientations. In contrast, efficient and isotropic modulation of electronic transport, which is useful in technology applications such as omnidirectional sensing, is rarely seen, especially for pristine crystals. Here we propose a strategy to realize extremely strong modulation of electron conduction by magnetic field which is independent of field direction. GdPS, a layered antiferromagnetic semiconductor with resistivity anisotropies, supports a field-driven insulator-to-metal transition with a paradoxically isotropic gigantic negative magnetoresistance insensitive to magnetic field orientations. This isotropic magnetoresistance originates from the combined effects of a near-zero spin-orbit coupling of Gd3+-based half-filling f-electron system and the strong on-site f-d exchange coupling in Gd atoms. Our results not only provide a novel material system with extraordinary magnetotransport that offers a missing block for antiferromagnet-based ultrafast and efficient spintronic devices, but also demonstrate the key ingredients for designing magnetic materials with desired transport properties for advanced functionalities. © 2024, CC BY-NC-SA.

关键词： Magnetoresistance

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Higher-order topological phase induced by hybrid magneto-electric resonances

arXiv

引用

arXiv 2021年

作者： Bobylev, Daniel A. Zhirihin, Dmitry V. Tihonenko, Dmitry I. Vakulenko, Anton Smirnova, Daria A. Khanikaev, Alexander B. Gorlach, Maxim A. School of Physics and Engineering ITMO University Saint Petersburg Russia Department of Electrical Engineering Grove School of Engineering City College of the City University of New York New YorkNY United States Physics Program Graduate Center of the City University of New York New YorkNY United States Research School of Physics Australian National University CanberraACT Australia Institute of Applied Physics Russian Academy of Science Nizhny Novgorod Russia

Rapid development of topological concepts in photonics unveils exotic phenomena such as unidirectional propagation of electromagnetic waves resilient to backscattering at sharp bends and disorder-immune localization of light at stable frequencies [1, 2]. Recently introduced higher-order topological insulators (HOTIs) [3, 4] bring in additional degrees of control over light confinement and steering. However, designs of photonic HOTIs reported so far are solely exploiting lattice geometries which are hard to reconfigure thus limiting tunability. Here, we elaborate a conceptually new mechanism to engineer higher-order topological phases which relies on the dual nature of electromagnetic field and exploits both electric and magnetic responses of the meta-atoms. Hybridization between these responses gives rise to the difference in the effective coupling which is controlled by the meta-atoms mutual orientations. This feature facilitates us to tailor photonic band topology exclusively via particle alignment and to flexibly reconfigure the topological phase. Focusing on the kagome array of split-ring resonators, we experimentally demonstrate topological edge and corner states in the microwave domain. Our findings provide a new promising route to induce and control higher-order topological phases and states. Copyright © 2021, The Authors. All rights reserved.

关键词： Metamaterials

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Interplay and competition between disorder and flat band in an interacting Creutz ladder

arXiv

引用

arXiv 2021年

作者： Orito, Takahiro Kuno, Yoshihito Ichinose, Ikuo Quantum Matter Program Graduate School of Advanced Science and Engineering Hiroshima University Higashi-Hiroshima739-8530 Japan Department of Physics Graduate School of Science Tsukuba University Ibaraki Tsukuba305-8571 Japan Department of Applied Physics Nagoya Institute of Technology Nagoya466-8555 Japan

We clarify the interplay and competition between disorder and flat band in the Creutz ladder with inter-particle interactions focusing on the system's dynamics. Without disorder, the Creutz ladder exhibits flat-band many-body localization (FMBL). In this work, we find that disorder generates drastic effects on the system, i.e., addition of it induces a thermal phase first and further increase of it leads the system to the conventional many-body-localized (MBL) phase. The competition gives novel localization properties and unconventional quench dynamics to the system. We first draw the global sketch of the localization phase diagram by focusing on the two-particle system. The thermal phase intrudes between the FMBL and MBL phases, the regime of which depends on the strength of disorder and interactions. Based on the two-particle phase diagram and the properties of the quench dynamics, we further investigate finite-filling cases in detail. At finite-filling fractions, we again find that the interplay/competition between the interactions and disorder in the original flat-band Creutz ladder induces thermal phase, which separate the FMBL and MBL phases. We also verify that the time evolution of the system coincides with the static phase diagrams. For suitable fillings, the conservation of the initial-state information and low-growth entanglement dynamics are also observed. These properties depend on the strength of disorder and interactions. © 2021, CC BY.

关键词： Phase diagrams

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