CT invariant quantum spin Hall effect in a ferromagnetic graphene

Abstract

We predict a quantum spin Hall effect (QSHE) in the ferromagnetic graphene under a magnetic field. Unlike the previous QSHE, this QSHE appears in the absence of any spin-orbit interaction, thus, arrived from a different physical origin. The previous QSHE is protected by the time-reversal (T) invariance. This new QSHE is protected by the CT invariance, where C is the charge conjugation operation. Due to this QSHE, the longitudinal resistance exhibits quantum plateaus. The plateau values are at 1/2, 1/6, 3/28, ..., (in the unit of $h/e^2$), depending on the filling factors of the spin-up and spin-down carriers. The spin Hall resistance is also investigated and is found to be robust against the disorder.

4 pages, 5 figures

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Cited by in corpus (24)

• Topological Insulators and Mott Physics from the Hubbard Interaction
• A topological look at the quantum spin Hall state
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• Quantum Andreev effect in 2D HgTe/CdTe quantum well-superconductor systems
• The spin-polarized $\nu =0$ state of graphene: a spin superconductor
• Spin-valley polarized edge states and quantum anomalous Hall states controlled by side potential in 2D honeycomb lattices
• Friedel oscillations at the Dirac-cone-merging point in anisotropic graphene
• Effect of magnetic field on a magnetic topological insulator film with structural inversion asymmetry
• Band bending and zero-conductance resonances controlled by edge electric fields in zigzag silicene nanoribbons
• Thermal dissipation in the quantum Hall regime in graphene
• Configuration-Sensitive Transport on Domain Walls of a Magnetic Topological Insulator
• Quantum coherence and its dephasing in the giant spin Hall effect and nonlocal voltage generated by magnetotransport through multiterminal graphene bars
• Enhancement of electron transport and bandgap opening in graphene induced by adsorbates
• Ferromagnetic induced Kondo effect in graphene with a magnetic impurity
• Pure spin current in a two-dimensional topological insulator
• Charge and spin Hall effect in spin chiral ferromagnetic graphene
• Magnetization-Induced Phase Transitions on the surface of 3D Topological Insulators
• Surface Step Defect in 3D Topological Insulators: Electric Manipulation of Spin and Quantum Spin Hall Effect
• Double refraction and spin splitter in a normal-hexagonal semiconductor junction
• Wavefront dislocations in graphene systems revealed by transport measurement
• Room-Temperature Pauli Spin Blockade and Current Rectification in 15-13-15 Armchair Graphene Nanoribbon Heterostructures
• Disorder and quantum transport of the helical quantum Hall phase in graphene
• Topological Interface States and Nonlinear Thermoelectric Performance in Armchair Graphene Nanoribbon Heterostructures
• Quantized multi-terminal resistances in ferromagnetic graphene p-n junctions