Results 51 to 60 of about 6,957 (201)

Spin-valley locking and bulk quantum Hall effect in a noncentrosymmetric Dirac semimetal BaMnSb2

Nature Communications, 2021
Valley dependent spin polarization called spin-valley locking appears in absence of magnetism but it is limited to rare examples of transition metal dichalcogenides. Here, the authors report evidence of spin-valley locking and stacked quantum Hall effect
J. Y. Liu, J. Yu, J. L. Ning, H. M. Yi, L. Miao, L. J. Min, Y. F. Zhao, W. Ning, K. A. Lopez, Y. L. Zhu, T. Pillsbury, Y. B. Zhang, Y. Wang, J. Hu, H. B. Cao, B. C. Chakoumakos, F. Balakirev, F. Weickert, M. Jaime, Y. Lai, Kun Yang, J. W. Sun, N. Alem, V. Gopalan, C. Z. Chang, N. Samarth, C. X. Liu, R. D. McDonald, Z. Q. Mao   +28 more
doaj   +1 more source

Spin-Hall Effect with Quantum Group Symmetries [PDF]

Letters in Mathematical Physics, 2006
v2: 14 pages, latex. Several changes and additional material; two extra sections added. To appear in LMP.
openaire   +4 more sources

Critical topology and pressure-induced superconductivity in the van der Waals compound AuTe2Br

npj Quantum Materials, 2022
The study on quantum spin Hall effect and topological insulators formed the prologue to the surge of research activities in topological materials in the past decade.
Erjian Cheng, Xianbiao Shi, Limin Yan, Tianheng Huang, Fengliang Liu, Wenlong Ma, Zeji Wang, Shuang Jia, Jian Sun, Weiwei Zhao, Wenge Yang, Yang Xu, Shiyan Li   +12 more
doaj   +1 more source

Acoustic spin-Chern insulator induced by synthetic spin–orbit coupling with spin conservation breaking

Nature Communications, 2020
In acoustic systems, quantum spin Hall physics is rarely observed because the crucial ingredient spin-orbit coupling is missing. Here, the authors construct an acoustic crystal with synthetic spin-orbit coupling and observe gapless helical boundary ...
Weiyin Deng, Xueqin Huang, Jiuyang Lu, Valerio Peri, Feng Li, Sebastian D. Huber, Zhengyou Liu   +6 more
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Field-controlled quantum anomalous Hall effect in electron-doped CrSiTe3 monolayer

npj 2D Materials and Applications, 2023
We report Chern insulating phases emerging from a single layer of layered chalcogenide CrSiTe3, a transition metal trichacogenides (TMTC) material, in the presence of charge doping.
Sungmo Kang, Seungjin Kang, Heung-Sik Kim, Jaejun Yu   +3 more
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Spin Hall effect of light based on a surface plasmonic platform

Nanophotonics, 2021
In recent years, the spin Hall effect of light (SHE), also called the photonic spin Hall effect has received extensive research attention, and a series of interesting results have been achieved.
Yu Xiantong, Wang Xin, Li Zhao, Zhao Litao, Zhou Feifan, Qu Junle, Song Jun   +6 more
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The quantum spin Hall effect and topological insulators [PDF]

Physics Today, 2010
In topological insulators, spin–orbit coupling and time-reversal symmetry combine to form a novel state of matter predicted to have exotic physical properties.
Shou-Cheng Zhang, Xiao-Liang Qi
openaire   +3 more sources

Quantized spin Hall conductance in a magnetically doped two dimensional topological insulator

Nature Communications, 2021
The quantum spin Hall effect is expected not to survive the presence of magnetic impurities. Here, authors report full quantization at very low temperatures in HgTe quantum wells alloyed with a few percent of magnetic Mn atoms, due to Kondo screening.
Saquib Shamim, Wouter Beugeling, Pragya Shekhar, Kalle Bendias, Lukas Lunczer, Johannes Kleinlein, Hartmut Buhmann, Laurens W. Molenkamp   +7 more
doaj   +1 more source

A toy model for quantum spin Hall effect [PDF]

Solid State Communications, 2015
In this Communication, we investigate a toy model of three-dimensional topological insulator surface, coupled homogeneously to a fictitious pseudo spin-$\frac{1}{2}$ particle. We show that this toy model captures the interesting features of topological insulator surface states, which include topological quantum phase transition and quantum spin hall ...
J. Nsofini, S. A. Owerre, S. A. Owerre
openaire   +2 more sources

Elementary theory of quantum Hall effect [PDF]

Maejo International Journal of Science and Technology, 2008
The Hall effect is the generation of a current perpendicular to both the direction of the applied electric as well as magnetic field in a metal or in a semiconductor. It is used to determine the concentration of electrons.
Keshav N. Shrivastava
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