Colloquium: Quantum anomalous Hall effect

CZ Chang, CX Liu, AH MacDonald - Reviews of Modern Physics, 2023 - APS
The quantum Hall (QH) effect, quantized Hall resistance combined with zero longitudinal
resistance, is the characteristic experimental fingerprint of Chern insulators—topologically …

Progress on two-dimensional ferrovalley materials

P Li, B Liu, S Chen, WX Zhang, ZX Guo - Chinese Physics B, 2024 - iopscience.iop.org
The electron's charge and spin degrees of freedom are at the core of modern electronic
devices. With the in-depth investigation of two-dimensional materials, another degree of …

Valley-polarized quantum anomalous Hall insulator in monolayer

SD Guo, WQ Mu, BG Liu - 2D Materials, 2022 - iopscience.iop.org
The coexistence of an intrinsic ferrovalley (FV) and nontrivial band topology attracts
intensive interest, both for its fundamental physics and for its potential applications, namely a …

Two-dimensional Weyl nodal-line semimetal and antihelical edge states in a modified Kane-Mele model

X Dai, PH Fu, YS Ang, Q Chen - Physical Review B, 2024 - APS
The Kane-Mele model has been modified to achieve versatile topological phases. Previous
work [T. Frank, Phys. Rev. Lett. 120, 156402 (2018) 0031-9007 10.1103/PhysRevLett …

Engineering Proximity Exchange by Twisting: Reversal of Ferromagnetic and Emergence of Antiferromagnetic Dirac Bands in

K Zollner, J Fabian - Physical Review Letters, 2022 - APS
We investigate the twist-angle and gate dependence of the proximity exchange coupling in
twisted graphene on monolayer Cr 2 Ge 2 Te 6 from first principles. The proximitized Dirac …

Band Gap Opening in Bilayer Graphene-CrCl3/CrBr3/CrI3 van der Waals Interfaces

G Tenasini, D Soler-Delgado, Z Wang, F Yao… - Nano …, 2022 - ACS Publications
We report experimental investigations of transport through bilayer graphene
(BLG)/chromium trihalide (CrX3; X= Cl, Br, I) van der Waals interfaces. In all cases, a large …

Proximity spin-orbit and exchange coupling in ABA and ABC trilayer graphene van der Waals heterostructures

K Zollner, M Gmitra, J Fabian - Physical Review B, 2022 - APS
We investigate the proximity spin-orbit and exchange couplings in ABA and ABC trilayer
graphene encapsulated within monolayers of semiconducting transition-metal …

Floquet valley-polarized quantum anomalous Hall state in nonmagnetic heterobilayers

F Zhan, Z Ning, LY Gan, B Zheng, J Fan, R Wang - Physical Review B, 2022 - APS
The valley-polarized quantum anomalous Hall (VQAH) state, which forwards a strategy for
combining valleytronics and spintronics with nontrivial topology, attracts intensive interest in …

Intrinsic Valley-Polarized Quantum Anomalous Hall Effect and Controllable Topological Phase Transition in Janus Fe2SSe

H Chen, R Liu, J Lu, X Zhao, G Hu… - The Journal of …, 2022 - ACS Publications
The valley-polarized quantum anomalous Hall effect (VP-QAHE) in topological materials,
which usually is induced by applying external manipulations, has attracted intensive …

Proximity effects in graphene on monolayers of transition-metal phosphorus trichalcogenides

K Zollner, J Fabian - Physical Review B, 2022 - APS
We investigate the electronic band structure of graphene on a series of two-dimensional
magnetic transition-metal phosphorus trichalcogenide monolayers, MPX 3 with M={Mn, Fe …