Generation of pure bulk valley current in graphene

Abstract

The generation of valley current is a fundamental goal in graphene valleytronics but no practical ways of its realization are known yet. We propose a workable scheme for the generation of bulk valley current in a graphene mechanical resonator through adiabatic cyclic deformations of the strains and chemical potential in the suspended region. The accompanied strain gauge fields can break the spatial mirror symmetry of the problem within each of the two inequivalent valleys, leading to a fnite valley current due to quantum pumping. An all-electrical measurement configuration is designed to detect the novel state with pure bulk valley currents.

5 pages, 3 figures

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• Valley polarization braiding in strained graphene
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• Spontaneous Valley Spirals in Magnetically Encapsulated Twisted Bilayer Graphene
• Perfect valley filter controlled by Fermi velocity modulation in graphene
• Large intravalley scattering due to pseudo-magnetic fields in crumpled graphene
• Valley filter from magneto-tunneling between single and bi-layer graphene
• Transmission spectra and valley processing of graphene and carbon nanotube superlattices with inter-valley coupling
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• Photo-induced valley currents in strained graphene
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• Minimal Geometry for Valley Filtering in Graphene
• Tight-binding Piezoelectric Theory and Electromechanical Coupling Correlations for Transition Metal Dichalcogenide Monolayers
• Mesoscopic valley filter in graphene Corbino disk containing a p-n junction
• Reverse strain-induced snake states in graphene nanoribbons
• Controlling electron flow in anisotropic Dirac materials heterojunctions: a super-diverging lens
• Modified spin-orbit couplings in uniaxially strained graphene
• Kekulé Induced Valley Birefringence and Skew Scattering in Graphene
• First-principles study on the electronic and transport properties of periodically nitrogen-doped graphene and carbon nanotube superlattices
• Theory of electromechanical coupling in dynamical graphene
• Tunable valley filtering in dynamically strained $\alpha$-${\mathcal{T}}_3$ lattices
• Deep learning of deformation-dependent conductance in thin films: nanobubbles in graphene
• Electrical valley filtering in transition metal dichalcogenides
• How to detect a genuine quantum pump effect in graphene?
• Magnetic quantum ratchet effect in Si-MOSFETs
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• Weyl Semimetal Path to Valley Filtering in Graphene
• Valley separation via trigonal warping
• Band Gaps and Wavefunctions of Electrons Coupled to Pseudo Electromagnetic Waves in Rippled Graphene
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• Origins of Valley Current Reversal in Partially Overlapped Graphene Layers
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