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arXiv 2025年

作者： Ilg, A. Lorenzetti, A. Baba, H. Baudot, J. Besson, A. Bugiel, S. Chujo, T. Colledani, C. Dorokhov, A. Bitar, Z. El Goffe, M. Gunji, T. Hu-Guo, C. Jaaskelainen, K. Katsuno, T. Kluge, A. Kostina, A. Kumar, A. Macchiolo, A. Mager, M. Park, J. Ploerer, E. Sakai, S. Senyukov, S. Shamas, H. Shibata, D. Snoeys, W. Stanek, P. Suljic, M. Tomasek, L. Valin, I. Wada, R. Yamaguchi, Y. Physik-Institut University of Zurich Winterthurerstrasse 190 Zurich8057 Switzerland University of Tokyo 7 Chome-3-1 Hongo Tokyo113-8654 Japan Université de Strasbourg CNRS IPHC UMR 7178 StrasbourgF-67000 France University of Tsukuba 1 Chome-1-1 Tennodai Ibaraki305-8577 Japan Physics Program Graduate School of Advanced Science and Engineering Hiroshima University 1 Chome-3-2 Kagamiyama Hiroshima739-0046 Japan Espl. des Particules 1 Geneva1217 Switzerland in Prague Zikova 4 Prague16636 Czech Republic Vrije Universiteit Brussel Pleinlaan 2 Brussels1050 Belgium

With the next upgrade of the ALICE inner tracking system (ITS3) as its primary focus, a set of small MAPS test structures have been developed in the 65 nm TPSCo CMOS process. The CE-65 focuses on the characterisation of the analogue charge collection properties of this technology. The latest iteration, the CE-65v2, was produced in different processes (Standard, with a low-dose n-type blanket, and blanket with gap between pixels), pixel pitches (15, 18, 22.5 µm) and pixel arrangements (square or staggered). The comparatively large pixel array size of 48 × 24 pixels in CE-65v2 allows, among other benefits, to study the uniformity of the pixel response. The CE-65v2 chip was characterised in a test beam at the CERN SPS. A first analysis showed that hit efficiencies of ≥ 99% and spatial resolution better than 5 µm can be achieved for all pitches and process variants. For the Standard process, thanks to larger charge sharing, even spatial resolutions below 3 µm are reached, in line with vertex detector requirements for the FCC-ee. This contribution further investigates the data collected at the SPS test beam. Thanks to the large sensor size and efficient data collection, a large amount of statistics was collected, which allows for detailed in-pixel studies to see the efficiency and spatial resolution as a function of the hit position within the pixels. Again, different pitches and process variants are compared. © 2025, CC BY-SA.

关键词： Storage rings

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Shifting of X-Ray Diffraction pattern peak on BaFe12O19 nanocrystalline produced by sol gel auto combustion method

Shifting of X-Ray Diffraction pattern peak on BaFe12O19 nano...

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International Conference on Advances in Manufacturing and Materials Engineering, ICAMME 2012

作者： Suastiyanti, Dwita Soegijono, Bambang Graduate Program of Material Science Department of Physics University of Indonesia Indonesia Mechanical Department of Indonesia Institute of Technology Serpong Indonesia Multiferroic Laboratory Department of Physics University of Indonesia Indonesia

ISBN: (纸本)9783037854983

Barium hexaferrite BaFe12O19 (BHF) is one of the great importance as permanent magnets, particularly for recording magnetic in microwave devices. Nanocrystalline BHF powders were prepared by sol gel auto combustion method in citric acid - metal nitrates system. Hence the mole ratios of Ba2+/Fe3+ were varied at 1:12;1:11.5 and 1:11 and with pH of 7 in all cases using amonia solution. For final formation of nanocrystalline BHF, heating process was done at 850oC for 10 hours in all mol ratios of Ba2+/Fe3+. The nanocrystallite size was calculated from broadening X Ray Diffraction (XRD) peaks using Scherrer formula. XRD data shows that BHF of ratio 1:12 has the same diffraction pattern with the ratio of 1:11 especially at higher value of 2 θ. Diffraction pattern of BHF with the ratio of 1:11.5 was fitting in exactly to the standard searching match and the highest value of best Figure of Merit (FoM) is 90% with the crystallite size of 22 nm. The best FoM and crystallite size for ratio of 1:12 and 1: 11 are 88% and 56 nm respectively. The diffraction peaks of BHF with the ratio of 1:12 and 1:11 are in the right side from of 1:11.5 since the amount of impurity of both is higher (12%) than of BHF with the ratio of 1:11.5 (10%). © (2012) Trans Tech Publications, Switzerland.

关键词： Sol-gels

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Chiral phonon-induced magnetization in cerium fluorides

Chiral phonon-induced magnetization in cerium fluorides

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CLEO: Fundamental science, CLEO:FS 2024 - Part of Conference on Lasers and Electro-Optics, CLEO 2024

作者： Luo, Jiaming Lin, Tong Zhang, Junjie Chen, Xiaotong Blackert, Elizabeth R. Xu, Rui Yakobson, Boris I. Zhu, Hanyu Department of Materials Science and Nano Engineering Rice University Houston United States Applied Physics Graduate Program Rice University Houston United States

We report that circularly polarized terahertz light pulses can drive chiral phonons, which then induce an effective quasi-static magnetic field on the order of 1 tesla to polarize the paramagnetic cerium fluoride. ... 详细信息

ISBN: (纸本)9781957171395

关键词： Phonons

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Dynamics of one-dimensional spin models via complex-time evolution of tensor networks

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arXiv 2025年

作者： Cha, Jeong Hyeok Lee, Hyun-Yong Kim, Heung-Sik Department of Semiconductor Physics Kangwon National University Chuncheon24341 Korea Republic of Interdisciplinary Program in Earth Environmental System Science and Engineering Kangwon National University Chuncheon24341 Korea Republic of Division of Semiconductor Physics Korea University Sejong30019 Korea Republic of Department of Applied Physics Graduate School Korea University Sejong30019 Korea Republic of Institute of Quantum Convergence Technology Kangwon National University Chuncheon24341 Korea Republic of

Studying the real-time dynamics of strongly correlated systems poses significant challenges, which have recently become more manageable thanks to advances in density matrix renormalization group (DMRG) and tensor network methods. A notable development in this area is the introduction of a complex-time evolution scheme for tensor network states, originally suggested for solving Anderson impurity model and designed to suppress the growth of entanglement under time evolution. In this study, we employ the complex-time evolution scheme to investigate the dynamics of one-dimensional spin systems, specifically the transverse-field Ising model (TFIM) and the XXZ model. Our analysis revisits the dynamic critical exponent z of the TFIM and explores the dynamical structure factor in both gapped and gapless states of the XXZ model. Importantly, the complex-time evolution reproduces the results of real-time evolution while mitigating the rapid growth of quantum entanglement typically associated with the latter. These results demonstrate that the combination of complex-time evolution and extrapolation provides a robust and efficient framework for studying the dynamics of complex quantum systems, enabling more comprehensive insights into their behavior. © 2025, CC BY.

关键词： Quantum entanglement

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Low-noise high-power ultrafast Yb-fiber amplifier system with integrated pump delivery

Low-noise high-power ultrafast Yb-fiber amplifier system wit...

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Conference on Lasers and Electro-Optics, CLEO 2009

作者： Mukhopadhyay, P.K. Kalaycioǧlu, H. Özgören, K. Levent Budunoǧlu, I. Ömer Ilday, F. Department of Physics Bilkent Universty TR-06800 Ankara Turkey Materials Science and Nanotechnology Graduate Program Bilkent Universty TR-06800 Ankara Turkey

We report the first high-power, low-noise fiber amplifier seeded by an all-normal-dispersion Yb-fiber laser with completely fiber-integrated pump delivery. 16 W of average power is obtained at 43 MHz repetition rate w... 详细信息

ISBN: (纸本)9781557528698

关键词： Fiber amplifiers

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Identify the Oil Seepage in Plantungan Geothermal Manifestation, Kendal Using HVSR Method 4

Identify the Oil Seepage in Plantungan Geothermal Manifestat...

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4th International Conference on Energy, Environment, Epidemiology and Information System, ICENIS 2019

作者： Fatma Yuliyanto, Gatot Harmoko, Udi Program of Energy School of Post Graduate Studies Diponegoro University Semarang Indonesia Department of Physics Faculty of Science and Mathematics Diponegoro University Semarang Indonesia

The presence of oil seepage to the surface indicates that at least an active petroleum system is present subsurface. Oil seepage that occurred in Plantungan, Kendal, Central Java, has been known since 1971 and still produces seepage until today. On the research area, three oil seepages point were found. Plantungan region is located in East Serayu Zone underlain by volcanic area, and based on the Geology Map, the research area is located in Banjarnegara-Pekalongan Sheet. To understand the geology condition of the research area, a subsurface mapping is needed, even though the mapping does not provide the depth of bedrock and reservoir, data recording using HVSR (Horizontal to Vertical Spectrum Ratio) method that has been done in 18 points is able to provide Vp and density profile to understand the distribution of oil seepage. The oil seepage is most prominent close to SB09 location, however the result from crossplot found that the value of highest Vp×density is on SB12A with 4,306,197 kg/m2s, and lowest Vp×density in on SB17A with 302,305.3 kg/m2s. © The Authors, published by EDP sciences, 2019.

关键词： Acoustic impedance

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Ultrafast dynamics of chiral phonons in tungsten disulfide

Ultrafast dynamics of chiral phonons in tungsten disulfide

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CLEO: Fundamental science, CLEO:FS 2024 - Part of Conference on Lasers and Electro-Optics, CLEO 2024

作者： Lin, Tong Chen, Xiaotong Xu, Rui Luo, Jiaming Zhu, Hanyu Department of Materials Science and Nano Engineering Rice University Houston United States Applied Physics Graduate Program Rice University Houston United States

Linearly and circularly polarized phonons in monolayer WS2 are directly excited by resonant infrared pulses. The dynamics of coherent and incoherent chiral phonons are measured by time-resolved Raman spectroscopy and ... 详细信息

ISBN: (纸本)9781957171395

关键词： Time-resolved spectroscopy

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Nonlinearity engineering of mode-locked fiber lasers: Similariton and soliton-similariton lasers

Nonlinearity engineering of mode-locked fiber lasers: Simila...

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2011 30th URSI General Assembly and Scientific Symposium, URSIGASS 2011

作者： Ilday, F. Ömer Oktem, Bülent Ülgüdür, Coşkun Physics Department Bilkent University Çankaya Ankara 06800 Turkey Material Science and Nanotechnology Graduate Program Bilkent University Çankaya Ankara 06800 Turkey

ISBN: (纸本)9781424451173

Fiber lasers are attractive with their simplicity, high powers and low cost. However, propagation of short pulses in optical fiber leads to nonlinear effects, which limit the technical performance. These effects drive rich dynamics, which is interesting from a fundamental perspective. The nonlinear waves community has unraveled the fascinating world of solitons and similaritons through experiments in fibers. This paper overviews the recent development of the soliton-similariton laser. The original similariton laser was the first to work with nonlinear effects, rather than minimizing or compensating them. In the soliton-similariton laser, the propagation is strongly nonlinear everywhere. © 2011 IEEE.

关键词： Solitons

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Low-noise high-power ultrafast Yb-fiber amplifier system with integrated pump delivery

Low-noise high-power ultrafast Yb-fiber amplifier system wit...

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International Quantum Electronics Conference, IQEC 2009

作者： Mukhopadhyay, P.K. Kalaycioǧlu, H. Özgören, K. Levent Budunoǧlu, I. Ilday, F. Ömer Department of Physics Bilkent Universty TR-06800 Ankara Turkey Materials Science and Nanotechnology Graduate Program Bilkent Universty TR-06800 Ankara Turkey

ISBN: (纸本)9781557528698

关键词： Fiber amplifiers

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Tungsten Nitride (W5N6): An Ultraresilient 2D Semimetal

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Nano Letters 2024年第1期24卷 67-73页

作者： Chin, Hao-Ting Wang, Deng-Chi Gulo, Desman Perdamaian Yao, Yu-Chi Yeh, Hao-Chen Muthu, Jeyavelan Chen, Ding-Rui Kao, Tzu-Chun Kalbáč, Martin Lin, Ping-Hui Cheng, Cheng-Maw Hofmann, Mario Liang, Chi-Te Liu, Hsiang-Lin Chuang, Feng-Chuan Hsieh, Ya-Ping Molecular Science and Technology Program Taiwan International Graduate Program Academia Sinica Taipei10617 Taiwan International Graduate Program of Molecular Science and Technology National Taiwan University Taipei10617 Taiwan Institute of Atomic and Molecular Sciences Academia Sinica Taipei10617 Taiwan Department of Physics National Sun Yat-Sen University Kaohsiung80424 Taiwan Department of Physics National Taiwan Normal University Taipei11677 Taiwan Department of Physics National Taiwan University Taipei10617 Taiwan Institute of Physics Academia Sinica Taipei115201 Taiwan International Graduate Program of Nano Science and Technology National Taiwan University Taipei10617 Taiwan Graduate Institute of Applied Physics National Taiwan University Taipei10617 Taiwan J. Heyrovský Institute of Physical Chemistry Czech Academy of Sciences Dolejškova 2155/3 Prague182 23 Czech Republic Hsinchu300092 Taiwan Physics Division National Center for Theoretical Sciences Taipei10617 Taiwan Center for Theoretical and Computational Physics National Sun Yat-sen University Kaohsiung80424 Taiwan

Two-dimensional transition metal nitrides offer intriguing possibilities for achieving novel electronic and mechanical functionality owing to their distinctive and tunable bonding characteristics compared to other 2D materials. We demonstrate here the enabling effects of strong bonding on the morphology and functionality of 2D tungsten nitrides. The employed bottom-up synthesis experienced a unique substrate stabilization effect beyond van-der-Waals epitaxy that favored W5N6 over lower metal nitrides. Comprehensive structural and electronic characterization reveals that monolayer W5N6 can be synthesized at large scale and shows semimetallic behavior with an intriguing indirect band structure. Moreover, the material exhibits exceptional resilience against mechanical damage and chemical reactions. Leveraging these electronic properties and robustness, we demonstrate the application of W5N6 as atomic-scale dry etch stops that allow the integration of high-performance 2D materials contacts. These findings highlight the potential of 2D transition metal nitrides for realizing advanced electronic devices and functional interfaces. © 2023 American Chemical Society

关键词： Tungsten compounds

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