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Recently, the quantum anomalous Hall effect (QAHE) has been theoretically proposed in compensated antiferromagnetic systems by using the magnetic topological insulator model [see arXiv:2404.13305 (2024)]. However, the related and systematic…

材料科学 · 物理学 2025-07-08 Zeyu Li , Yulei Han , Zhenhua Qiao

Topological superconductors are predicted to exhibit outstanding phenomena, including non-abelian anyon excitations, heat-carrying edge states, and topological nodes in the Bogoliubov spectra. Nonetheless, and despite major experimental…

超导电性 · 物理学 2023-03-28 Hennadii Yerzhakov , Roni Ilan , Efrat Shimshoni , Jonathan Ruhman

Motivated by the discovery of the quantum anomalous Hall effect in Cr-doped \ce{(Bi,Sb)2Te3} thin films, we study the generic states for magnetic topological insulators and explore the physical properties for both magnetism and itinerant…

强关联电子 · 物理学 2021-08-16 Chao-Kai Li , Xu-Ping Yao , Gang Chen

The quantum anomalous Hall effect, an exotic topological state first theoretically predicted by Haldane and recently experimentally observed, has attracted enormous interest for low-power-consumption electronics. In this work, we derived a…

介观与纳米尺度物理 · 物理学 2017-08-11 Yizhou Liu , Yong Xu , Shou-Cheng Zhang , Wenhui Duan

We explore the interplay between topologies in the momentum and real spaces to formulate a thermodynamic description of nonequilibrium injection of topological charges under external bias. We show that the edge modes engendered by the…

介观与纳米尺度物理 · 物理学 2021-11-09 Mostafa Tanhayi Ahari , Shu Zhang , Ji Zou , Yaroslav Tserkovnyak

The exploration of magnetic topological insulators is instrumental in exploring axion electrodynamics and intriguing transport phenomena, such as the quantum anomalous Hall effect. Here, we report that a family of magnetic compounds…

材料科学 · 物理学 2024-11-07 Yufei Zhao , Yiyang Jiang , Hyeonhu Bae , Kamal Das , Yongkang Li , Chao-Xing Liu , Binghai Yan

Bound states in superconductors are expected to exhibit a spatially resolved electron-hole asymmetry which is the hallmark of their quantum nature. This asymmetry manifests as oscillations at the Fermi wavelength, which is usually tiny and…

Strongly correlated fractional quantum Hall liquids support fractional excitations, which can be understood in terms of adiabatic flux insertion arguments. A second route to fractionalization is through the coupling of weakly interacting…

强关联电子 · 物理学 2013-09-04 Armin Rahmani , Rodrigo A. Muniz , Ivar Martin

A general mechanism is presented by which topological physics arises in strongly correlated systems without flat bands. Starting from a charge transfer insulator, topology emerges when the charge transfer energy between the cation and anion…

强关联电子 · 物理学 2022-09-08 Trithep Devakul , Liang Fu

Historically, the genesis of anomalous Hall effect (AHE) in magnetic materials has always been a fascinating yet controversial topic in the solid state physics community. Recent progress on the understanding of this topic has revealed an…

强关联电子 · 物理学 2021-11-29 Durgesh Singh , Jadupati Nag , Sankararao Yadam , V. Ganesan , Aftab Alam , K. G. Suresh

The quantum anomalous Hall state with a large band gap and a high Chern number is significant for practical applications in spintronics. By performing first-principles calculations, we investigate electronic properties of the fully…

介观与纳米尺度物理 · 物理学 2023-10-10 Zhen Zhang , Zhichao Zhou , Xiaoyu Wang , Huiqian Wang , Xiuling Li , Xiao Li

We study the quantum Hall effect in the surface states of topological insulator in the presence of a perpendicular magnetic field in the framework of edge states. Motion of Dirac fermions will form descrete Landau levels, among which a…

介观与纳米尺度物理 · 物理学 2009-09-24 Shun-Qing Shen

Quantum anomalous Hall effect (QAHE) is a fundamental transport phenomenon in the field of condensed-matter physics. Without external magnetic field, spontaneous magnetization combined with spin-orbit coupling give rise to a quantized Hall…

介观与纳米尺度物理 · 物理学 2013-05-08 Z. F. Wang , Zheng Liu , Feng Liu

Recently, iron-chalcogenide superconductors have emerged as a new and promising platform for studying and manipulating Majorana zero mode (MZM). By combining topological band structure and superconductivity in a multiband material, they…

Recent experiments have observed bulk superconductivity in doped topological insulators. Here we ask whether vortex Majorana zero modes, previously predicted to occur when superconductivity is induced on the surface of topological…

超导电性 · 物理学 2015-03-17 Pavan Hosur , Pouyan Ghaemi , Roger S. K. Mong , Ashvin Vishwanath

Quantum spin Hall-superconductor hybrids are promising sources of topological superconductivity and Majorana modes, particularly given recent progress on HgTe and InAs/GaSb. We propose a new method of revealing topological superconductivity…

超导电性 · 物理学 2014-11-11 Shu-Ping Lee , Karen Michaeli , Jason Alicea , Amir Yacoby

The quantum anomalous Hall effect (QAHE) has recently been reported to emerge in magnetically-doped topological insulators. Although its general phenomenology is well established, the microscopic origin is far from being properly understood…

In magnetic topological insulators, a phase transition between a quantum anomalous Hall (QAH) and an Anderson localization phase can be triggered by the rotation of an applied magnetic field. Without the scattering paths along magnetic…

介观与纳米尺度物理 · 物理学 2026-01-05 Kristof Moors , Gen Yin

We propose a mechanism which can generate supercurrents in spin-orbit coupled superconductors with charged magnetic inclusions. The basic idea is that through spin-orbit interaction, the in-plane electric field near the edge of each…

超导电性 · 物理学 2025-06-23 Benjamin A. Levitan , Yuval Oreg , Erez Berg

Momentum-space topology of electrons under strong spin-orbit coupling contributes to the electrically induced torques exerting on magnetic textures insensitively to disorder or thermal fluctuation. We present a direct connection between…

介观与纳米尺度物理 · 物理学 2022-01-06 Yasufumi Araki , Jun'ichi Ieda