Quantum anomalous Hall effect in germanene by proximity coupling to a semiconducting ferromagnetic substrate NiI₂

Abstract

Interfaces between materials are ubiquitous in materials science, especially in devices. As device dimensions are continue to shrink, understanding the physical characteristics that appear at interfaces is crucial to exploit...

Strain-engineering induced topological phase transitions and multiple valley states in Janus monolayer VCSiN4

“…[35][36][37] Valleytronic devices, such as reversible logic gates and all-electric-controlled valley filters, 38 have been proved as candidate systems for digital information processing. From the point of exploring potential applications in valleytronics and spintronics, [39][40][41][42][43][44][45][46] the multiple valley features not only bring interesting physical properties but also enrich the quantum states and valley degree of freedom, such as the selective polarized light absorption and Quantum anomalous valley Hall effect (QAVHE). 26,34 Though highly valuable, FV materials with both OOP magnetization and multiple adjustable valley states are quite rare.…”

Spontaneous valley polarization and valley-nonequilibrium quantum anomalous Hall effect in Janus monolayer ScBrI

“…[1][2][3] In order to better process information, manipulating and exploiting the valley degree of freedom for lowenergy carriers have gained special interest. [4][5][6] Among numerous 2D materials, [7][8][9][10][11][12][13] 2H-phase transition metal dichalcogenides (TMDs) MX 2 not only reveal great application prospects but also offer an intriguing platform to investigate novel physical phenomena due to their tunable and exceptional properties. [14][15][16][17] Because of inversion asymmetry, the valley degrees of freedom originating from the degenerate energy extrema for the corners of the hexagonal Brillouin zone (BZ) present in those systems as strong spin-orbital coupling (SOC).…”

Electronic-correlation induced sign-reversible Berry phase and quantum anomalous valley Hall effects in Janus monolayer OsClBr

“…From the perspective of developing possible applications in spintronics and valleytronics, [30][31][32][33][34][35][36] probing various phase transitions in 2D materials has played a significant role in promoting our discovery and understanding of emerging quantum states. Generally speaking, the intriguing physical properties and rich quantum states can be driven by the phase transitions.…”