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Log-periodic quantum magneto-oscillations and discrete scale invariance in topological material HfTe5

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arXiv 2018年

作者： Wang, Huichao Liu, Yanzhao Liu, Yongjie Xi, Chuanying Wang, Junfeng Liu, Jun Wang, Yong Li, Liang Lau, Shu Ping Tian, Mingliang Yan, Jiaqiang Mandrus, David Dai, Ji-Yan Liu, Haiwen Xie, X.C. Wang, Jian International Center for Quantum Materials School of Physics Peking University Beijing100871 China Department of Applied Physics Hong Kong Polytechnic University Kowloon Hong Kong Wuhan National High Magnetic Field Center Huazhong University of Science and Technology Wuhan430074 China High Magnetic Field Laboratory Chinese Academy of Sciences HefeiAnhui230031 China Center of Electron Microscopy State Key Laboratory of Silicon Materials School of Materials Science and Engineering Zhejiang University Hangzhou310027 China Materials Science and Technology Division Oak Ridge National Laboratory Oak RidgeTN37831 United States Department of Materials Science and Engineering University of Tennessee KnoxvilleTN37996 United States Center for Advanced Quantum Studies Department of Physics Beijing Normal University Beijing100875 China Collaborative Innovation Center of Quantum Matter Beijing100871 China CAS Center for Excellence in Topological Quantum Computation University of Chinese Academy of Sciences Beijing100190 China

Discrete scale invariance (DSI) is a phenomenon featuring intriguing log-periodicity which can be rarely observed in quantum systems. Here we report the log-periodic quantum oscillations in the magnetoresistance (MR) and the Hall traces of HfTe5 crystals, which reveals the appearance of DSI. The oscillations show the same logB-periodicity in the behavior of MR and Hall, indicating an overall effect of the DSI on the transport properties. Moreover, the DSI feature in the Hall resistance signals its close relation to the carriers. Combined with theoretical simulations, we further clarify the origin of the log-periodic oscillations and the DSI in the topological materials. Our work evidences the universality of the DSI in the Dirac materials and paves way for the full understanding of the novel phenomenon. Copyright © 2018, The Authors. All rights reserved.

关键词： Tellurium compounds

Nonlocal Quantum Erasure of Phase Objects

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arXiv 2019年

作者： Gao, Lu Zhang, Yingwen Cohen, Eliahu Elitzur, Avshalom C. Karimi, Ebrahim School of Science China University of Geosciences Beijing 100083 China Physics Department University of Ottawa Advanced Research Complex 25 Templeton Street OttawaONK1N 6N5 Canada National Research Council of Canada 100 Sussex Drive OttawaONK1A0R6 Canada Faculty of Engineering Institute of Nanotechnology and Advanced Materials Bar Ilan University Ramat Gan5290002 Israel Iyar Israeli Institute for Advanced Research POB 651 Zichron Ya’akov3095303 Israel Institute for Quantum Studies Chapman University Orange CA92866 United States

The Franson interference is a fourth order interference effect, which unlike the better known Hong-Ou-Mandel interference, does not require the entangled photon pairs to be present at the same space-time location for interference to occur – it is nonlocal. Here, we use a modified Franson interferometer to experimentally demonstrate the nonlocal erasure and correction of an image of a phase-object taken through coincidence imaging. This non-local quantum erasure technique can have several potential applications such as phase corrections in quantum imaging and microscopy and also user authentication of two foreign distant parties. Copyright © 2019, The Authors. All rights reserved.

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Noncollinearity-modulated electronic properties of the monolayer CrI3

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arXiv 2018年

作者： Ren, Lingling Liu, Qian Xu, Pengxiang Zhong, Zhicheng Yang, Li Yuan, Zhe Xia, Ke Center for Advanced Quantum Studies and Department of Physics Beijing Normal University Beijing100875 China Key Lab. of Magnetic Mat. and Devices and Zhejiang Prov. Key Lab. of Magnetic Mat. and Applic. Technol. Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo315201 China Department of Physics and Institute of Materials Science and Engineering Washington University in St. Louis St. LouisMI63130 United States

Introducing noncollinear magnetization into a monolayer CrI3 is proposed to be an effective approach to modulate the local electronic properties of the two-dimensional (2D) magnetic material. Using first-principles calculation, we illustrate that both the conduction and valence bands in the monolayer CrI3 are lowered down by spin spiral states. The distinct electronic structure of the monolayer noncollinear CrI3 can be applied in nanoscale functional devices. As a proof of concept, we show that a magnetic domain wall can form a one-dimensional conducting channel of in the 2D semiconductor via proper gating. This conducting channel is approximately 7 nm wide and has the carrier concentration of 1013 1014 cm2. Copyright © 2018, The Authors. All rights reserved.

关键词： Monolayers

Corrigendum to "Phylogenomics of the genus Tursiops and closely related delphininae reveals extensive reticulation among lineages and provides inference about eco-evolutionary drivers" [Mol. Phylogenet. Evol. 146 (2020) 106756]

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Molecular phylogenetics and evolution 2021年 157卷 107047页

作者： Andre E Moura Kypher Shreves Małgorzata Pilot Kimberly R Andrews Daniel M Moore Takushi Kishida Luciana Möller Ada Natoli Stefania Gaspari Michael McGowen Ing Chen Howard Gray Mauvis Gore Ross M Culloch Muhammad S Kiani Maia Sarrouf Willson Asma Bulushi Tim Collins Robert Baldwin Andrew Willson Gianna Minton Louisa Ponnampalam A Rus Hoelzel Museum and Institute of Zoology Polish Academy of Sciences Poland School of Life Sciences University of Lincoln UK. Electronic address: avmoura@miiz.waw.pl. School of Life Sciences University of Lincoln UK Institute of Medical Sciences School of Medical Sciences University of Aberdeen UK. School of Life Sciences University of Lincoln UK. Institute for Bioinformatics and Evolutionary Studies (IBEST) University of Idaho USA. School of Biosciences Durham University UK. Wildlife Research Center Kyoto University Japan. College of Science and Engineering Flinders University Australia. College of Natural and Health Sciences Zayed University United Arab Emirates. Consiglio Nazionale delle Ricerche-Istituto di Scienze Marine Ancona Italy. Smithsonian National Museum of Natural History USA. Division of Science Yale-NUS College Singapore. Marine Conservation International UK. School of Biosciences Durham University UK Marine Scotland Science Scottish Government Marine Laboratory UK. Institute of Marine Science University of Karachi Pakistan. Environment Society of Oman Oman. Ocean Giants Program Wildlife Conservation Society USA. Five Oceans Environmental Services Oman. Megaptera Marine Conservation Netherlands. The MareCet Research Organization Malaysia. School of Biosciences Durham University UK. Electronic address: a.r.hoelzel@dur.ac.uk.

The effect of green supply chain management implementation to marketing performance through company competitiveness (study on paper industry in West Java)

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Journal of Physics: Conference Series 2018年第1期1013卷

作者： O Hijuzaman A Rahayu Kusnendi Management Science Doctoral Studies Program School of Graduate Studies Indonesia University of Education Depok Indonesia Industrial Engineering Program STT Wastukancana Purwakarta Indonesia

The purpose of this study was to determine and analyze the effect of direct and indirect implementation of Green Supply-Chain Management (GSCM) on the Performance Marketing and Competitiveness Mediation Paper Company in West Java province. Object This research is the paper company that existed in West Java Province, which amounts to 30 companies as well as a sample of research, while variables studied are Variable Green Supply- Chain Management, Company Competitiveness Variable and Variable of Paper Marketing Industry Performance in West Java Province. The method used SEM with Variance Based or Component Based with Software used is SmartPLS 3.0. On this research are identified that no effect of Competitiveness on Marketing Performance in Paper Companies in West Java Province.

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Techno-economic evaluation of a chemical looping combustion plant with waste heat utilization

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Energy Procedia 2017年 142卷 2990-2995页

作者： Oghare Victor Ogidiama Tariq Shamim Department of Mechanical and Materials Engineering Masdar Institute of Science and Technology P.O. Box 54224 Abu Dhabi UAE Mechanical Engineering Program University of Michigan-Flint Flint MI 48502 USA

Chemical looping combustion (CLC) is a promising candidate for cost effective means of CO 2 capture and higher energy production from power plants. The CLC process uses an oxygen carrier (usually a metal) for the separation of oxygen from air and the oxygen is then used for fuel combustion. The two processes occur in two inter-connected reactors which are generally termed air and fuel reactors. The fuel combustion process results in a rich stream of CO 2 and water. The CO 2 stream is captured with negligible energy consumption by condensation of the exhaust gases. In this paper, the technical and economic performance of a power plant using CLC with two methods of waste heat utilization from the plant exhaust gas streams is studied. The plant studied is a natural gas powered plant of 50MWth gross input energy. The waste heat is utilized either for additional output energy generation using a steam turbine or for cooling using absorption chilling. The economic analysis shows a higher economic value of the waste utilization for cooling purpose compared to additional power generation. For the absorption chilling system, the cost of electricity (COE) is about 5.5 cents/kWh and has a payback period of about 6.4 years using the method employed in the study while the payback period is 3.3 years using a generic methodology employed in other studies.

关键词： Chemical looping combustion waste heat utilization steam turbine absorption chilling COE

Energy landscape of ZnO clusters and low-density polymorphs

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Physical Review B 2017年第6期96卷 064108-064108页

作者： Robabe Rasoulkhani Hossein Tahmasbi S. Alireza Ghasemi Somayeh Faraji Samare Rostami Maximilian Amsler Department of Physics Institute for Advanced Studies in Basic Sciences (IASBS) Zanjan 45137-66731 Iran Department of Materials Science and Engineering Northwestern University Evanston Illinois 60208 USA

We report on an extensive study of ZnO materials with cagelike motifs in clusters and bulk phases through structural searches using the minima hopping method. A novel putative ground state was discovered for the (ZnO)32 cluster with a tubelike structure, closely related to the previously reported (ZnO)24 ground-state cage geometry. Furthermore, the effect of ionization on the geometries and energetic ordering of (ZnO)n clusters with n=3–10,12 was studied by directly sampling the energy landscape of the ionized system. Our results indicate that the transition from ring and planar structures to three-dimensional cages occurs at larger cluster sizes than in the neutral system. Inspired by the bottom-up design philosophy and the predominance of cagelike structures in medium-sized clusters, a search for crystalline ZnO was conducted aimed specifically at low-density polymorphs, resulting in the discovery of 57 novel metastable phases. The voids in these low-density materials closely resemble the hollow cage structures of small (ZnO)n/(ZnO)n+ clusters with n<16. Analogous to clathrate materials, these voids could serve to accommodate guest atoms to tailor the materials properties for various applications.

关键词： Crystal structure Semiconductors Artificial neural networks Density functional theory

Hyperuniformity and anti-hyperuniformity in one-dimensional substitution tilings

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arXiv 2018年

作者： Oguz, Erdal C. Socolar, Joshua E.S. Steinhardt, Paul J. Torquato, Salvatore School of Mechanical Engineering Sackler Center for Computational Molecular and Materials Science Tel Aviv University Tel Aviv Israel Physics Department Duke University DurhamNC27708 United States Department of Physics Princeton Center for Theoretical Science Princeton University PrincetonNJ08544 United States Center for Cosmology and Particle Physics Department of Physics New York University New YorkNY10003 United States Department of Chemistry Department of Physics Princeton Institute for the Science and Technology of Materials Program in Applied and Computational Mathematics Princeton University PrincetonNJ08540 United States

We consider the scaling properties characterizing the hyperuniformity (or anti-hyperuniformity) of long wavelength fluctuations in a broad class of one-dimensional substitution tilings. We present a simple argument that predicts the exponent α governing the scaling of Fourier intensities at small wavenumbers, tilings with α > 0 being hyperuniform, and confirm with numerical computations that the predictions are accurate for quasiperiodic tilings, tilings with singular continuous spectra, and limit-periodic tilings. Tilings with quasiperiodic or singular continuous spectra can be constructed with α arbitrarily close to any given value between −1 and 3. Limit-periodic tilings can be constructed with α between −1 and 1 or with Fourier intensities that approach zero faster than any power law. Copyright © 2018, The Authors. All rights reserved.

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Polybenzimidazole membranes with nanophase-separated structure induced by non-ionic hydrophilic side chains for vanadium flow batteries

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Journal of materials Chemistry A 2017年第9期6卷 3895-3905页

作者： Sangshan Peng Xuemei Wu Xiaoming Yan Li Gao Yangzhi Zhu Daishuang Zhang Jie Li Qian Wang Gaohong He State Key Laboratory of Fine Chemicals R&D Center of Membrane Science and Technology School of Chemical Engineering Dalian University of Technology Dalian China School of Petroleum and Chemical Engineering Dalian University of Technology Panjin China Department of Chemical and Environmental Engineering Materials Science Engineering Program Bourns College of Engineering University of California Riverside California 92521 USA

Polybenzimidazole (PBI) membranes with nanophase-separated structure induced by non-ionic hydrophilic side chain are designed and fabricated for vanadium flow batteries (VFBs). The designed PBI membranes are prepared by grafting non-ionic hydrophilic side chains via an N-substitution reaction. This molecular modification induces nanophase separation and formation of hydrophilic clusters, which act as effective proton transfer pathways, hence dramatically improving the proton conductivity. Meanwhile, the vanadium permeability is inappreciable due to the appropriate size of hydrophilic clusters and Donnan exclusion of protonated grafted-PBI membranes (GPBI). Free from ion exchange groups, GPBI membranes maintain the good chemical stability of the pristine PBI membrane. As a result, the designed membrane exhibits an impressive performance, combining ultrahigh proton conductivity, ion selectivity and chemical stability. The GPBI-based VFB exhibits a coulombic efficiency of over 99% and an energy efficiency of 84% at 120 mA cm⁻², the highest reported for dense PBI membranes for VFB applications. The decent stability of GPBI membranes is demonstrated by the stable performance over 200 charge–discharge cycles and the ex situ immersion test. This work provides a new insight into the design of high-performance PBI membranes for VFB applications.

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