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Strain-induced in-plane anomalous Hall effect in single-crystalline Fe(211) films

Physical Review B 2025年第17期111卷 174423-174423页

作者： Haoran Chen Yongwei Cui Tong Wu Yunzhuo Wu Ke Pei Yixuan Wang Yue Chen Hongyue Xu Renchao Che Zhe Yuan Cong Xiao Yizheng Wu Department of Physics Applied Surface Physics State Key Laboratory Fudan University Shanghai 200433 China Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative Materials Academy for Engineering and Technology Fudan University Shanghai 200438 China Institute for Nanoelectronic Devices and Quantum Computing Fudan University Shanghai 200433 China Interdisciplinary Center for Theoretical Physics and Information Science (ICTPIS) Fudan University Shanghai 200433 China Center for Advanced Quantum Studies and Department of Physics Beijing Normal University Beijing 100875 China Shanghai Research Center for Quantum Sciences Shanghai 201315 China Shanghai Key Laboratory of Metasurfaces for Light Manipulation Fudan University Shanghai 200433 China

We present a systematic investigation of the in-plane anomalous Hall effect (IPAHE) induced by the in-plane magnetization in single-crystalline Fe(211) films epitaxially grown on MgO(110) substrates. A single-crystal domain in the Fe(211) films is well controlled using slightly miscut substrates, enabling precise observation of the IPAHE. A pronounced IPAHE is observed when the magnetization aligns along the Fe[1¯11] direction, with the in-plane anomalous Hall resistivity ρIPAH reaching its maximum value and showing independence from the current direction. This behavior aligns with phenomenological models dictated by crystalline symmetry and likely stems from epitaxial strain in the films. The scaling relationship between ρIPAH and the longitudinal resistivity across a range of temperatures and film thicknesses is systematically analyzed. A nonmonotonic temperature dependence of ρIPAH indicates a complex interplay between extrinsic and intrinsic mechanisms. Our study provides experimental insight into the mechanisms underlying IPAHE and highlights the potential for tailoring IPAHE through film thickness and strain engineering.

关键词： Magnetization

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Comments on Privacy-preserving Yoking proof with key exchange in the three-party setting

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International Journal of Network Security 2019年第2期21卷 355-358页

作者： Cheng, Qingfeng Zhang, Xinglong State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou Henan Province450001 China

In 2017, Tian, Yang and Mu presented a new three-party key exchange protocol YPKE in radio frequency identification environment, which is based on the HMQV protocol. They claimed that the proposed YPKE protocol in the three-party setting meets user privacy and session key security. In this comment, we point out that the YPKE protocol still has some weaknesses. Our results show that the proposed YPKE protocol cannot provide perfect forward secrecy, and also cannot resist impersonation attack. At the same time, the YPKE protocol is lack of the security of ephemeral private key leakage and unknown key-share, which the original HMQV protocol can achieve. © 2019 Femto Technique Co., Ltd.

关键词： Radio frequency identification (RFID)

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Optical gyroscope with coherent-boosted two-mode squeezed beams

Optical gyroscope with coherent-boosted two-mode squeezed be...

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2020 Frontiers in Optics Conference, FiO 2020

作者： Xiao, Xiao-Qi Matekole, Elisha S. Zhao, Jiankang Zeng, Guihua Dowling, Jonathan P. Lee, Hwang Department of Communication Engineering Shanghai Dianji University Shanghai200240 China Hearne Institute for Theoretical Physics Department of Physics and Astronomy Louisiana State University Baton RougeLA70803 United States State Key Laboratory of Advanced Optical Communication Systems and Networks Institute of Sensing and Navigation Department of Electronic Engineering Shanghai Jiaotong University Shanghai200030 China National Institute of Information and Communications Technology Tokyo184-8795 Japan NYU-ECNU Institute of Physics NYU Shanghai Shanghai200062 China CAS-Alibaba Quantum Computing Laboratory USTC Shanghai201315 China

ISBN: (纸本)9781943580804

We propose a new gyroscope scheme with a two-mode squeezed coherent light as the source. With the intensity-difference measurement, the phase sensitivity is better than the shot-noise limit, and can saturate the Crámer-Rao Bound. The loss inside the gyroscope can be compensated by adjusting the squeezing parameters. © OSA 2020 © 2020 The Author(s)

关键词： Shot noise

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非中心对称原子层超晶格中的角分辨手性磁各向异性（英文）

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Science Bulletin 2025年第9期 1406-1409页

作者：成龙保明瑞张雪张静娴杨群李强曹慧邱大为李惠程光磊周华左健民周晓东沈健祝智峰王文波翟晓芳 School of Physical Science and Technology Shanghai Tech University School of Information Science and Technology Shanghai Tech University CAS Key Laboratory of Microscale Magnetic Resonance and School of Physical Sciences University of Science and Technology of China State Key Laboratory of Surface Physics and Institute for Nanoelectronic Devices and Quantum Computing Fudan University X-ray Science Division Advanced Photon SourceArgonne National Laboratory Institutes of Physical Science and Information Technology Anhui University Department of Materials Science and Engineering and Materials Research Laboratory University of Illinois Urbana-Champaign Shanghai Tech Laboratory for Topological Physics Shanghai Tech University

Chirality is a widespread phenomenon in nature, where two non-superimposable enantiomers exist with one being the mirror image of the other. The interplay between chirality and magnetism has recently drawn intensive interest in non-centrosymmetric magnetic materials absent of both spatial and time inversion symmetries [1]. Among various chiral magnetic effects, the electrical manifestation of the magneto-chiral effect is crucial for both fundamental science and technological applications [2,3].

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Spin-induced orbital frustration in a hexagonal optical lattice

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Physical Review Research 2021年第3期3卷 033274-033274页

作者： Yongqiang Li Jianmin Yuan Xiaoji Zhou Xiaopeng Li Department of Physics National University of Defense Technology Changsha 410073 People's Republic of China Department of Physics Graduate School of China Academy of Engineering Physics Beijing 100193 People's Republic of China State Key Laboratory of Advanced Optical Communication System and Network Department of Electronics Peking University Beijing 100871 People's Republic of China State Key Laboratory of Surface Physics Institute of Nanoelectronics and Quantum Computing and Department of Physics Fudan University Shanghai 200438 People's Republic of China Shanghai Qi Zhi Institute AI Tower Xuhui District Shanghai 200232 People's Republic of China

Complex lattices provide a versatile ground for fascinating quantum many-body physics. Here, we propose an exotic mechanics for generating orbital frustration in hexagonal lattices. We study two-component (pseudospin-12) Bose gases in p-orbital bands of two-dimensional hexagonal lattices, and find that the system exhibits previously untouched orbital frustration as a result of the interplay of spin and orbital degrees of freedom, in contrast to normal Ising-type orbital ordering of spinless p-orbital band bosons in two-dimensional hexagonal lattices. Based on the classification by symmetry analysis, we find the interplay of orbital frustration and strong interaction leads to exotic Mott and superfluid phases with spin-orbital intertwined orders, in spite of the complete absence of spin-orbital interaction in the Hamiltonian. Our study implies many-body correlations in a multiorbital setting could induce rich spin-orbital intertwined physics in complex lattice structures.

关键词： Bose-Einstein condensates Cold gases in optical lattices Exotic phases of matter Quantum phase transitions Dynamical mean field theory

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A multi-cubic-kilometre neutrino telescope in the western Pacific Ocean

arXiv

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arXiv 2022年

作者： Ye, Z.P. Hu, F. Tian, W. Chang, Q.C. Chang, Y.L. Cheng, Z.S. Gao, J. Ge, T. Gong, G.H. Guo, J. Guo, X.X. He, X.G. Huang, J.T. Jiang, K. Jiang, P.K. Jing, Y.P. Li, H.L. Li, J.L. Li, L. Li, W.L. Li, Z. Liao, N.Y. Lin, Q. Lin, J. Liu, F. Liu, J.L. Liu, X.H. Miao, P. Mo, C. Morton-Blake, I. Peng, T. Sun, Z.Y. Tang, J.N. Tang, Z.B. Tao, C.H. Tian, X.L. Wang, M.X. Wang, Y. Wang, Y. Wei, H.D. Wei, Z.Y. Wu, W.H. Xian, S.S. Xiang, D. Xu, D.L. Xue, Q. Yang, J.H. Yang, J.M. Yu, W.B. Zeng, C. Zhang, F.Y.D. Zhang, T. Zhang, X.T. Zhang, Y.Y. Zhi, W. Zhong, Y.S. Zhou, M. Zhu, X.H. Zhuang, G.J. Tsung-Dao Lee Institute Shanghai Jiao Tong University Shanghai200240 China School of Physics and Astronomy Shanghai Jiao Tong University MOE Key Laboratory for Particle Astrophysics and Cosmology Shanghai Key Laboratory for Particle Physics and Cosmology Shanghai200240 China Department of Astronomy School of Physics Peking University Being 100871 China State Key Laboratory of Ocean Engineering School of Naval Architecture Ocean and Civil Engineering Shanghai Jiao Tong University Shanghai200240 China Shanghai Jiao Tong University Sanya Yazhou Bay Institute of Deep Sea Technology Sanya572024 China Center for High Energy Physics Peking University Beijing100871 China Department of Engineering Physics Tsinghua University Beijing100084 China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of China Hefei230026 China Department of Modern Physics University of Science and Technology of China Hefei230026 China Shanghai Key Lab of Electrical Insulation and Thermal Aging School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai200240 China Key Laboratory of Marine Ecosystem Dynamics Second Institute of Oceanography MNR Hangzhou310012 China Kavli Institute for Astronomy and Astrophysics Peking University Bejing100871 China Center for High Performance Computing Shanghai Jiao Tong University Shanghai200240 China Shanghai Jiao Tong University Sichuan Research Institute Chengdu610213 China School of Oceanography Shanghai Jiao Tong University Shanghai200030 China Key Laboratory of Submarine Geosciences Second Institute of Oceanography MNR Hangzhou310012 China School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University Shanghai200240 China MOE Key Laboratory for Laser Plasmas School of Physics and Astronomy Shanghai Jiao Tong University Shanghai200240 China Shanghai Jiao Tong University Shanghai200240 China Zhangjiang Institute for Advanced Study

Next-generation neutrino telescopes with significantly improved sensitivity are required to pinpoint the sources of the diffuse astrophysical neutrino flux detected by IceCube and uncover the century-old puzzle of cosmic ray origins. A detector near the equator will provide a unique viewpoint of the neutrino sky, complementing IceCube and other neutrino telescopes in the Northern Hemisphere. Here we present results from an expedition to the north-eastern region of the South China Sea, in the western Pacific Ocean. A favorable neutrino telescope site was found on an abyssal plain at a depth of ∼ 3.5 km. At depths below 3 km, the sea current speed, water absorption and scattering lengths for Cherenkov light, were measured to be vc © 2022, CC BY-NC-ND.

关键词： Cosmic rays

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A dynamic network change detection method using network embedding 4th

A dynamic network change detection method using network embe...

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4th International Conference on Cloud computing and Security, ICCCS 2018

作者： Sun, Tong Liu, Yan China State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou China

ISBN: (纸本)9783030000059

Dynamic networks are ubiquitous. Detecting dynamic network changes is helpful to understand the network development trend and discover network anomalies in time. It is a research hotspot at present. The structure of the network in the real world is very complex, the current feature learning method is difficult to capture a variety of network connectivity patterns, and the definition of efficient network features requires a large number of neighborhood knowledge and computational costs. In order to overcome this limitation, this paper presents a method of dynamic network change detection using network embedding, which automates the whole process by using feature extraction as a embedding problem, and carries out dynamic network change detection by analyzing the distribution of nodes in space after network embedding processing. We use this method to simulate dynamic network and real dynamic network datasets to prove the validity of this method. © Springer Nature Switzerland AG 2018.

关键词： Network embeddings

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Truth discovery on categorical multi-valued attributes with source relations 4

Truth discovery on categorical multi-valued attributes with ...

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4th IEEE International Conference on Computer and Communications, ICCC 2018

作者： Zheng, Yan Luo, Junyong Yin, Meijuan Yang, Wen China State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou China

ISBN: (纸本)9781538683392

In the era of big data, a mass of data fusion applications need to obtain accurate and complete attribute information about various objects. Most existing truth discovery methods are for single-valued attributes, which will be invalid for multi-valued attributes. They are usually based on the assumption that the data sources are independent of each other. It is not in line with the reality that related relationship occurs between them. Since multi-valued attributes are at large discrete, this paper proposes a truth discovery method incorporating the qulity and the correlations of data sources, namely Categorical Multi-Truths Finder algorithm (CMTF), which iteratively derives the accuracy and the recall rate of data source along with the truth set for each attribute. The experimental results show that CMTF outperforms the state-of-the-art. © 2018 IEEE.

关键词： Data fusion

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HHL Analysis and Simulation Verification Based on Origin Quantum Platform

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Journal of Physics: Conference Series 2021年第1期2113卷

作者： Xiaonan Liu Lina Jing Lin Han Jie Gao State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou 450001 China Henan Supercomputing Center Zhengzhou University Zhengzhou 450001 China

Solving large-scale linear equations is of great significance in many engineering fields, such as weather forecasting and bioengineering. The classical computer solves the linear equations, no matter adopting the elimination method or Kramer's rule, the time required for solving is in a polynomial relationship with the scale of the equation system. With the advent of the era of big data, the integration of transistors is getting higher and higher. When the size of transistors is close to the order of electron diameter, quantum tunneling will occur, and Moore's Law will not be followed. Therefore, the traditional computing model will not be able to meet the demand. In this paper, through an in-depth study of the classic HHL algorithm, a small-scale quantum circuit model is proposed to solve a 2×2 linear equations, and the circuit diagram and programming are used to simulate and verify on the Origin Quantum Platform. The fidelity under different parameter values reaches more than 90%. For the case where the matrix to be solved is a sparse matrix, the quantum algorithm has an exponential speed improvement over the best known classical algorithm.

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A binary translation backend registers allocation algorithm based on priority 5th

A binary translation backend registers allocation algorithm ...

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5th International Conference on Geo-Spatial Knowledge and Intelligence, GSKI 2017

作者： Wang, Jun Pang, Jianmin Fu, Liguo Shan, Zheng Yue, Feng Zhang, Jiahao State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou450001 China

ISBN: (纸本)9789811308956

As most binary translation systems don’t consider the difference of register requirements of basic blocks, which brings redundant memory access instructions caused by unnecessary registers overflow. To solve this problem, a binary translation backend registers allocation algorithm based on priority (BTBRAP) is proposed. Firstly, local global register is allocated statically to reduce the global register maintenance overhead, according to the statistical features of registers on the source platform. Then, the number of every register requested in basic blocks is determined, according to the relationship between intermediate representation and the source platform registers. So the priority of registers allocation is obtained. Conclusively, allocate the registers dynamically based on the priority to reduce the registers overflow. As the test results of nbench, representative recursive programs and SPEC2006 show, the algorithm effectively reduces the redundant memory access of local code, and improves the program performance with an average increase of 7.94%. © Springer Nature Singapore Pte Ltd. 2018.

关键词： Software testing

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