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Electrostatic tuning of Kondo effect in a rare-earth-doped wide-band-gap oxide

Physical Review B 2013年第15期87卷 155151-155151页

作者： Yongfeng Li Rui Deng Weinan Lin Yufeng Tian Haiyang Peng Jiabao Yi Bin Yao Tom Wu Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore 637371 Singapore Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education) College of Physics Jilin University Changchun 130012 People's Republic of China School of Materials Science & Engineering The University of New South Wales Sydney NSW 2052 Australia State Key Lab of Superhard Material College of Physics Jilin University Changchun 130012 China Physical Sciences and Engineering Division King Abdullah University of Science and Technology Thuwal 23955-6900 Saudi Arabia

As a long-lived theme in solid-state physics, the Kondo effect reflects the many-body physics involving the short-range Coulomb interactions between itinerant electrons and localized spins in metallic materials. Here we show that the Kondo effect is present in ZnO, a prototypical wide-band-gap oxide, doped with a rare-earth element (Gd). The localized 4f electrons of Gd ions do not produce remanent magnetism, but interact strongly with the host electrons, giving rise to a saturating resistance upturn and negative magnetoresistance at low temperatures. Furthermore, the Kondo temperature and resistance can be electrostatically modulated using electric-double-layer gating with liquid ionic electrolyte. Our experiments provide the experimental evidence of tunable Kondo effect in ZnO, underscoring the magnetic interactions between localized and itinerant electrons and the emergent transport behaviors in such doped wide-band-gap oxides.

关键词： SOLID state physics KONDO effect GADOLINIUM ELECTROSTATICS COULOMB functions ZINC oxide ENERGY gaps (Physics)

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Cancer Treatment: Ultrasmall Phosphorescent Polymer Dots for Ratiometric Oxygen Sensing and Photodynamic Cancer Therapy (Adv. Funct. Mater. 30/2014)

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advanced Functional Materials 2014年第30期24卷

作者： Huifang Shi Xing Ma Qiang Zhao Bin Liu Qiuyu Qu Zhongfu An Yanli Zhao Wei Huang Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link 637371 Singapore Singapore Jiangsu‐Singapore Joint Research Center for Organic/Bio‐Electronics & Information Displays and Institute of Advanced Materials (IAM) Nanjing Tech University 30 South Puzhu Road Nanjing P. R. China Key Laboratory for Organic Electronics & Information Displays Nanjing University of Posts and Telecommunications 210023 Nanjing P. R. China Department of Chemical and Biomolecular Engineering National University of Singapore 4 Engineering Drive 4 117576 Singapore Singapore School of Materials Science and Engineering Nanyang Technological University 50 Nanyang Avenue 639798 Singapore Singapore

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Chiral Scars in Chaotic Dirac Fermion Systems

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Physical Review Letters 2013年第6期110卷 064102-064102页

作者： Hongya Xu Liang Huang Ying-Cheng Lai Celso Grebogi Institute of Computational Physics and Complex Systems and Key Laboratory for Magnetism and Magnetic Materials of MOE Lanzhou University Lanzhou Gansu 730000 China School of Electrical Computer and Energy Engineering Arizona State University Tempe Arizona 85287 USA Department of Physics Arizona State University Tempe Arizona 85287 USA Institute for Complex Systems and Mathematical Biology King’s College University of Aberdeen Aberdeen AB24 3UE United Kingdom Freiburg Institute for Advanced Studies University of Freiburg 79104 Freiburg Germany

Do relativistic quantum scars in classically chaotic systems possess unique features that are not shared by nonrelativistic quantum scars? We report a class of relativistic quantum scars in massless Dirac fermion systems whose phases return to the original values or acquire a 2π change only after circulating twice about some classical unstable periodic orbits. We name such scars chiral scars, the successful identification of which has been facilitated tremendously by our development of an analytic, conformal-mapping-based method to calculate an unprecedentedly large number of eigenstates with high accuracy. Our semiclassical theory indicates that the physical origin of chiral scars can be attributed to a combined effect of chirality intrinsic to massless Dirac fermions and the geometry of the underlying classical orbit.

关键词： FERMIONS LEPTONS (Nuclear physics) COMBINATORIAL dynamics SCHRODINGER equation QUANTUM interference

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Differently implicational α-universal triple I restriction method of (1, 2, 2) type

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Journal of Systems engineering and Electronics 2012年第4期23卷 560-573页

作者： Yiming Tang Fuji Ren Yanxiang Chen Information and Communication Engineering Postdoctoral Research Station Hefei University of TechnologyHefei 230009P.R.China State Key Laboratory of Virtual Reality Technology and Systems Beihang UniversityBeijing 100191P.R.China Anhui Province Key Laboratory of Affective Computing and Advanced Intelligent Machine Hefei University of TechnologyHefei 230009P.R.China Institute of Technology and Science The University of TokushimaMinami Josanjima770-8506Japan

From the viewpoints of both fuzzy system and fuzzy reasoning, a new fuzzy reasoning method which contains the α- triple I restriction method as its particular case is proposed. The previous α-triple I restriction principles are improved, and then the optimal restriction solutions of this new method are achieved, especially for seven familiar implications. As its special case, the corresponding results of α-triple I restriction method are obtained and improved. Lastly, it is found by examples that this new method is more reasonable than the α-triple I restriction method.

关键词： fuzzy reasoning fuzzy system triple I method triple Irestriction method compositional rule of inference method.

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Descope of the ALIA mission

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Journal of Physics: Conference Series 2015年第1期610卷

作者： Xuefei Gong Yun-Kau Lau Shengnian Xu Pau Amaro-Seoane Shan Bai Xing Bian Zhoujian Cao Gerui Chen Xian Chen Yanwei Ding Peng Dong Wei Gao Gerhard Heinzel Ming Li Shuo Li Fukun Liu Ziren Luo Mingxue Shao Rainer Spurzem Baosan Sun Wenlin Tang Yan Wang Peng Xu Pin Yu Yefei Yuan Xiaomin Zhang Zebing Zhou Institute of Applied Mathematics Academy of Mathematics and Systems Science Chinese Academy of Sciences No.55 Zhongguancun Donglu Beijing 100190 China Morningside Center of Mathematics Chinese Academy of Sciences No.55 Zhongguancun Donglu Beijing 100190 China State Key Laboratory of Scientific and Engineering Computing Academy of Mathematics and Systems Science Chinese Academy of Sciences No.55 Zhongguancun Donglu Beijing 100190 China State Key Laboratory of Theoretical Physics Institute of Theoretical Physics Chinese Academy of Sciences No.55 Zhongguancun Donglu Beijing 100190 China Max-Planck-Institut für Gravitationsphysik (Albert Einstein Institut) Am Mfühlenberg 1 D-14476 Potsdam Germany Theoretisch-Physikalisches Institut Friedrich-Schiller-Universität Jena Frobelstieg 1 D-07743 Jena Germany University of Chinese Academy of Sciences No.19A Yuquan Road Beijing 100049 China College of Applied Sciences Beijing University of Technology 100 Pingleyuan Beijing 100124 China Dongfanghong Small Satellite Company F12 Shenzhou Building No.31 Zhongguancun Nandajie Beijing 100081 China Max-Planck-Institut für Gravitationsphysik (Albert Einstein Institut) Callinstraße 38 D-30167 Hannover Germany National Astronomical Observatories Chinese Academy of Sciences 20A Datun Road Beijing 100012 China Department of Astronomy School of Physics Peking University No.5 Yiheyuan Road Beijing 100871 China The Kavli Institute for Astronomy and Astrophysics Peking University 5 Yiheyuan Road Beijing 100871 China Institute of Mechanics Chinese Academy of Sciences 15 Beisihuanxi Road Beijing 100190 China Astronomisches Rechen-Institut Zentrum für Astronomie Universität Heidelberg Mönchhofstrasse 12-14 69120 Heidelberg Germany School of Physics Huazhong University of Science and Technology 1037 Luoyu Road Wuhan 430074 China Institute of Theoretical Physics Chinese Academy of Sciences No.55 Zhongguancun Donglu Beijing 100190 China Mathematical Science Center Tsinghua Unive

The present work reports on a feasibility study commissioned by the Chinese Academy of Sciences of China to explore various possible mission options to detect gravitational waves in space alternative to that of the eLISA/LISA mission concept. Based on the relative merits assigned to science and technological viability, a few representative mission options descoped from the ALIA mission are considered. A semi-analytic Monte Carlo simulation is carried out to understand the cosmic black hole merger histories and the possible scientific merits of the mission options in probing the light seed black holes and their coevolution with galaxies in early Universe. The study indicates that, by choosing the armlength of the interferometer to be three million kilometers and shifting the sensitivity floor to around one-hundredth Hz, together with a very moderate improvement on the position noise budget, there are certain mission options capable of exploring light seed, intermediate mass black hole binaries at high redshift that are not readily accessible to eLISA/LISA, and yet the technological requirements seem to within reach in the next few decades for China.

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1p3/2 Proton-Hole State in Sn132 and the Shell Structure Along N=82

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Physical Review Letters 2014年第13期112卷 132501-132501页

作者： J. Taprogge A. Jungclaus H. Grawe S. Nishimura P. Doornenbal G. Lorusso G. S. Simpson P.-A. Söderström T. Sumikama Z. Y. Xu H. Baba F. Browne N. Fukuda R. Gernhäuser G. Gey N. Inabe T. Isobe H. S. Jung D. Kameda G. D. Kim Y.-K. Kim I. Kojouharov T. Kubo N. Kurz Y. K. Kwon Z. Li H. Sakurai H. Schaffner K. Steiger H. Suzuki H. Takeda Zs. Vajta H. Watanabe J. Wu A. Yagi K. Yoshinaga G. Benzoni S. Bönig K. Y. Chae L. Coraggio A. Covello J.-M. Daugas F. Drouet A. Gadea A. Gargano S. Ilieva F. G. Kondev T. Kröll G. J. Lane A. Montaner-Pizá K. Moschner D. Mücher F. Naqvi M. Niikura H. Nishibata A. Odahara R. Orlandi Z. Patel Zs. Podolyák A. Wendt Instituto de Estructura de la Materia CSIC E-28006 Madrid Spain Departamento de Física Teórica Universidad Autónoma de Madrid E-28049 Madrid Spain RIKEN Nishina Center RIKEN 2-1 Hirosawa Wako-shi Saitama 351-0198 Japan GSI Helmholtzzentrum für Schwerionenforschung GmbH 64291 Darmstadt Germany LPSC Université Joseph Fourier Grenoble 1 CNRS/IN2P3 Institut National Polytechnique de Grenoble F-38026 Grenoble Cedex France Department of Physics Tohoku University Aoba Sendai Miyagi 980-8578 Japan Department of Physics University of Tokyo Hongo 7-3-1 Bunkyo-ku 113-0033 Tokyo Japan School of Computing Engineering and Mathematics University of Brighton Brighton BN2 4JG United Kingdom Physik Department E12 Technische Universität München D-85748 Garching Germany Institut Laue-Langevin B.P. 156 F-38042 Grenoble Cedex 9 France Department of Physics Chung-Ang University Seoul 156-756 Republic of Korea Rare Isotope Science Project Institute for Basic Science Daejeon 305-811 Republic of Korea Department of Nuclear Engineering Hanyang University Seoul 133-791 Republic of Korea School of Physics and State key Laboratory of Nuclear Physics and Technology Peking University Beijing 100871 China MTA Atomki P.O. Box 51 Debrecen H-4001 Hungary Department of Physics Osaka University Machikaneyama-machi 1-1 Osaka 560-0043 Toyonaka Japan Department of Physics Faculty of Science and Technology Tokyo University of Science 2641 Yamazaki Noda Chiba Japan INFN Sezione di Milano via Celoria 16 I-20133 Milano Italy Institut für Kernphysik Technische Universität Darmstadt D-64289 Darmstadt Germany Department of Physics Sungkyunkwan University Suwon 440-746 Republic of Korea Istituto Nazionale di Fisica Nucleare Complesso Universitario di Monte S. Angelo I-80126 Napoli Italy Dipartimento di Fisica Università di Napoli Federico II Complesso Universitario di Monte S. Angelo I-80126 Napoli Italy CEA DAM DIF 91297 Arpajon cedex France Instituto de Fsica Corpuscular CSIC

A low-lying state in In82131, the one-proton hole nucleus with respect to double magic Sn132, was observed by its γ decay to the Iπ=1/2− β-emitting isomer. We identify the new state at an excitation energy of Ex=1353 keV, which was populated both in the β decay of Cd13183 and after β-delayed neutron emission from Cd13284, as the previously unknown πp3/2 single-hole state with respect to the Sn132 core. Exploiting this crucial new experimental information, shell-model calculations were performed to study the structure of experimentally inaccessible N=82 isotones below Sn132. The results evidence a surprising absence of proton subshell closures along the chain of N=82 isotones. The consequences of this finding for the evolution of the N=82 shell gap along the r-process path are discussed.

关键词： PROTONS PROTON decay EXCITATION energy (In situ microanalysis) NEUTRON emission PARTICLE decays

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A MMSM-based Hybrid Method for Chinese MicroBlog Word Segmentation 2

A MMSM-based Hybrid Method for Chinese MicroBlog Word Segmen...

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2nd CIPS-SIGHAN Joint Conference on Chinese Language Processing, CLP 2012

作者： Sun, Xiao Li, Chengcheng Tang, Chenyi Ye, Jiaqi AnHui Province Key Laboratory of Affective Computing and Advanced Intelligent Machine School of Computer and Information Hefei University of Technology Anhui Hefei230009 China School of Computer Science and Engineering Dalian University of Technology Liaoning Dalian116023 China

After years of researches, Chinese word segmentation has achieved quite high precisions for formal style text. However, the performance of segmentation is not so satisfying for MicroBlog corpora. In this paper we describe a scheme for Chinese word segmentation for, MicroBlog which integrates the character-based and word-based information in the directed graph generated by MMSM model. Word-level information is effective for analysis of known words, while character-level information is useful for analysis of unknown words. A multi-chain unequal states CRF model is proposed. The proposed multi-chain unequal states CRF has two state chains with unequal states which can recognize the POS tag simultaneously. The hybrid model was effective and adopted in real-world system. © 2021 CLP 2012 - 2nd CIPS-SIGHAN Joint Conference on Chinese Language Processing. All Rights Reserved.

关键词： Directed graphs

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$H_{\infty}$ Filtering for Discrete-Time Systems With Stochastic Incomplete Measurement and Mixed Delays

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IEEE Transactions on Industrial Electronics 2012年第6期59卷 2732-2739页

作者： Peng Shi Xiaoli Luan Fei Liu School of Engineering and Science Victoria University Melbourne VIC Australia Key Laboratory of Advanced Control for Light Industry Processes Ministry of Education Institute of Automation Jiangnan University Wuxi China Department of Computing and Mathematical Sciences University of Glamorgan Pontypridd UK

This paper focuses on the H ∞ filtering problem for a class of discrete-time systems with stochastic incomplete measurement and mixed random delays. A more realistic and accurate measurement mode is proposed to compensate for the negative influence of both missing data and different time delays in a random way. In the system, all of the stochastic variables are mutually independent but satisfy the Bernoulli binary distribution. In particular, the stochastic infinite distributed delays are introduced in the discrete-time domain. Sufficient conditions for the existence of the admissible filter are derived in terms of linear matrix inequalities, which ensures the asymptotic stability as well as a prescribed H ∞ performance for the filter errors. A simulation example is exploited to demonstrate the effectiveness of the proposed design procedures.

关键词： Discrete time systems Symmetric matrices Linear matrix inequalities Loss measurement Delay effects Distributed databases Stochastic processes Random processes

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Carbon‐Based Dots Co‐doped with Nitrogen and Sulfur for High Quantum Yield and Excitation‐Independent Emission†

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Angewandte Chemie 2013年第30期125卷

作者： Yongqiang Dong Hongchang Pang Hong Bin Yang Chunxian Guo Jingwei Shao Yuwu Chi Chang Ming Li Ting Yu School of Chemical and Biomedical Engineering and Center for Advanced Bionanosystems Nanyang Technological University Singapore 637457 (Singapore) Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 (Singapore) Department of Physics Faculty of Science Nanyang Technological University Singapore 117542 (Singapore) College of Chemistry and Chemical Engineering Fuzhou University Fuzhou 350108 (China) Institute for Clean Energy & Advanced Materials Southwest University Chongqing 400715 (China) Chongqing Key Laboratory for Advanced Materials & Technologies of Clean Energies Chongqing 400715 (China)

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Tunnel transition mechanism support all types of NAT users

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Tongxin Xuebao/Journal on Communications 2012年第SUPPL.2期33卷 294-300页

作者： Lu, Nian-Feng Wang, Zhen-Xing Liu, Hui-Sheng State Key Laboratory of Mathematic Engineering and Advanced Computing PLA Information Engineering University Zhengzhou 450002 China

Through the analied of current tunneling mechanism, a more efficient and applicable tunneling mechanism called TrNAT based on TSP to face different scenarios was proposed. Optimization of the communications between NAT users was achieved with ideology of MIPv6. Then, Shim6 was utilized to realize route redundancy and also improved the route aggregation of 6 to 4 tunnel. Finally, TrNAT tunneling mechanism was implemented on Linux kernel and validated by experiments.

关键词： Computer operating systems

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