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The two-dimensional electron systems in graphene and in topological insulators are described by massless Dirac equations. Although the two systems have similar Hamiltonians, they are polar opposites in terms of spin-orbit coupling strength.…

介观与纳米尺度物理 · 物理学 2013-08-16 D. A. Pesin , A. H. MacDonald

The effects of spin-orbit coupling on the two-electron spectra in lateral coupled quantum dots are investigated analytically and numerically. It is demonstrated that in the absence of magnetic field the exchange interaction is practically…

介观与纳米尺度物理 · 物理学 2010-04-12 Fabio Baruffa , Peter Stano , Jaroslav Fabian

We derive a model of localized edge states in the finite width strip for two-dimensional electron gas formed in the hybrid system of bismuth monolayer deposited on the silicon interface and described by the nearly-free electron model with…

介观与纳米尺度物理 · 物理学 2014-04-09 D. V. Khomitsky , A. A. Chubanov

Recent experiments on spin torque oscillators have revealed interactions between multiple magnetodynamic modes, including mode-coexistence, mode-hopping, and temperature-driven cross-over between modes. Initial multimode theory has…

介观与纳米尺度物理 · 物理学 2017-08-02 Steven S. -L. Zhang , Ezio Iacocca , Olle Heinonen

Topological insulators exhibit gapless edge or surface states that are topologically protected by time-reversal symmetry. However, several promising candidates for topologically insulating materials (such as Bi$_2$Se$_3$ and HgTe) contain…

介观与纳米尺度物理 · 物理学 2018-07-11 Arian Vezvaee , Antonio Russo , Sophia E. Economou , Edwin Barnes

Topological effects in edge states are clearly visible on short lengths only, thus largely impeding their studies. On larger distances, one may be able to dynamically enhance topological signatures by exploiting the high mobility of edge…

A strong coupling between the electron spin and its motion is one of the prerequisites of spin-based data storage and electronics. A major obstacle is to find spin-orbit coupled materials where the electron spin can be probed and…

介观与纳米尺度物理 · 物理学 2015-12-11 Christoph Kastl , Paul Seifert , Xiaoyue He , Kehui Wu , Yongqing Li , Alexander Holleitner

The presence of spin-orbit coupling drives the anomalous magnetotransport at oxide interfaces and forms the basis for numerous intriguing properties of these 2D electron systems, such as topologically protected phases or anti-localization.…

强关联电子 · 物理学 2018-02-28 Patrick Seiler , Jone Zabaleta , Robin Wanke , Jochen Mannhart , Thilo Kopp , Daniel Braak

Antiferromagnetic two-dimensional (2D) materials are currently under intensive theoretical and experimental investigations in view of their potential applications in antiferromagnet-based magnonic and spintronic devices. Recent experimental…

介观与纳米尺度物理 · 物理学 2019-11-05 Doried Ghader , Antoine Khater

Effects of electron-electron and spin-orbit interactions on the ground-state magnetic configuration and on the corresponding thermoelectric and spin thermoelectric properties in zigzag nanoribbons of two-dimensional hexagonal crystals are…

介观与纳米尺度物理 · 物理学 2015-12-09 Michal Wierzbicki , Jozef Barnas , Renata Swirkowicz

We show that periodically time-modulating the Dzyaloshinskii-Moriya interaction (DMI) in a two-dimensional magnon insulator may induce a topological phase transition that results in the presence of robust edge modes. To this end, we study a…

介观与纳米尺度物理 · 物理学 2026-04-02 Ivan Martinez-Berumen , T. Pereg-Barnea , W. A. Coish

Magnetic skyrmions, renowned for their fascinating electromagnetic properties, hold potential for next-generation topological spintronic devices. Recent advancements have unveiled a rich tapestry of 3D topological magnetism. Nevertheless,…

介观与纳米尺度物理 · 物理学 2025-12-11 Yaodong Wu , Jialiang Jiang , Weiwei Wang , Lingyao Kong , Shouguo Wang , Mingliang Tian , Haifeng Du , Jin Tang

We present a comprehensive magnetotransport analysis of monolayer 1T WTe2, highlighting the role of nonsymmorphic symmetries in governing edge-state spin behavior. By comparing the electronic transmission in nanoribbons with edges along the…

介观与纳米尺度物理 · 物理学 2025-07-25 Shrushti Tapar , Bent Weber , Saroj P Dash , 3 Shantanu Mukherjee , Bhaskaran Muralidharan

Topological insulators are new states of quantum matter in which surface states residing in the bulk insulating gap are protected by time-reversal symmetry. When a proper kind of antiferromagnetic long range order is established in a…

介观与纳米尺度物理 · 物理学 2015-05-19 Jing Wang , Rundong Li , Shou-Cheng Zhang , Xiao-Liang Qi

We present a novel approach to spin manipulation in atomic-scale nanostructures. Our ab initio calculations clearly demonstrate that it is possible to tune magnetic properties of sub-nanometer structures by adjusting the geometry of the…

介观与纳米尺度物理 · 物理学 2009-11-13 O. O. Brovko , P. A. Ignatiev , V. S. Stepanyuk , P. Bruno

Strong coupling between light and molecular matter is currently attracting interest both in chemistry and physics, in the fast-growing field of molecular polaritonics. The large near-field enhancement of the electric field of plasmonic…

介观与纳米尺度物理 · 物理学 2024-10-03 Álvaro Buendía , Jose A. Sánchez-Gil , Vincenzo Giannini , William L. Barnes , Marie S. Rider

The surface of a 3D topological insulator is conducting and the topologically nontrivial nature of the surface states is observed in experiments. It is the aim of this paper to review and analyze experimental observations with respect to…

介观与纳米尺度物理 · 物理学 2013-03-11 M. Veldhorst , M. Snelder , M. Hoek , C. G. Molenaar , D. P. Leusink , A. A. Golubov , H. Hilgenkamp , A. Brinkman

Two-dimensional (2D) metallic altermagnets present exciting opportunities for both fundamental research and practical innovations. Their ability to enhance tunneling magnetoresistance in magnetic tunnel junctions, combined with the direct…

介观与纳米尺度物理 · 物理学 2026-02-24 Raghottam M. Sattigeri , Xujia Gong , Amar Fakhredine , Carmine Autieri , Giuseppe Cuono

The transport properties of interacting electrons for which the spin degree of freedom is taken into account are numerically studied for small two dimensional diffusive clusters. On-site electron-electron interactions tend to delocalize the…

介观与纳米尺度物理 · 物理学 2009-11-07 Richard Berkovits , Jan W. Kantelhardt

The possibility of electron beam guiding is theoretically explored on the surface of a topological insulator through the proximity interaction with a magnetic material. The electronic band modification induced by the exchange coupling at…

介观与纳米尺度物理 · 物理学 2015-06-17 Xiaodong Li , Ki Wook Kim