Quantum Anomalous Hall Effect in Hg${}_{1-y}$Mn${}_y$Te Quantum Wells

Abstract

The quantum Hall effect is usually observed when the two-dimensional electron gas is subjected to an external magnetic field, so that their quantum states form Landau levels. In this work we predict that a new phenomenon, the quantum anomalous Hall effect, can be realized in Hg${}_{1-y}$Mn${}_y$Te quantum wells, without the external magnetic field and the associated Landau levels. This effect arises purely from the spin polarization of the $Mn$ atoms, and the quantized Hall conductance is predicted for a range of quantum well thickness and the concentration of the $Mn$ atoms. This effect enables dissipationless charge current in spintronics devices.

5 pages, 3 figures. For high resolution figures see final published version when available

References in corpus (8)

• Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
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• Anomalous Hall Effect and Magnetic Monopoles in Momentum-Space
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Cited by in corpus (382)

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• Transport through Quantum Anomalous Hall Bilayers with Lattice Mismatch
• Phase Transition and Field Effect Topological Quantum Transistor made of monolayer MoS2
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• Spin and electric currents induced by a spin-motive force in two-dimensional Dirac semimetals protected by nonsymmorphic symmetries
• Magnetic-flux tunable electronic transport through domain walls in a three-dimensional second-order topological insulator
• Variety of scenarios of the magnetic exchange response in topological insulators
• Tunable magnetic anisotropy from higher-harmonics exchange scattering on the surface of a topological insulator
• Design of Chern Insulating Phases in Honeycomb Lattices
• Quantum anomalous Hall effect with tunable Chern numbers induced by d-wave sublattice-staggered altermagnetism
• Correlated disorder induced anomalous transport in magnetically doped topological insulators
• Effect of extended confinement on the structure of edge channels in the quantum anomalous Hall effect
• Topological properties of multilayer magnon insulators
• Crossover of spin Hall to quantum anomalous Hall effect in PbC/MnSe heterostructures
• Valley-Polarized Quantum Anomalous Hall Phase in Bilayer Graphene with Layer-Dependent Proximity Effects
• Exact Mappings in Condensed Matter Physics
• Nodal-line semimetal superlattices
• Interlayer Exchange Coupling-Induced Critical-Metal-to-Insulator Phase Transition in Quantum Anomalous Hall Insulators