Generation of Pure Bulk Valley Current in Graphene

2012/09/30 by Yongjin Jiang, Tony Low, Kai Chang +4 · 7 citations
Engineering · Materials Science · Physics and Astronomy · #2D Materials and Applications #Graphene research and applications #Nanowire Synthesis and Applications #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevlett.110.046601

published as Phys. Rev. Lett. 110, 046601(2013) · 5 pages, 3 figures

openalex publication_date 2013/01/23 · arxiv created 2013/01/24 · arxiv updated 2013/01/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

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 a 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 finite valley current due to quantum pumping. An all-electrical measurement configuration is designed to detect the novel state with pure bulk valley currents.

Citations

• Spintronics: Fundamentals and applications
• Electronic transport in two-dimensional graphene
• Colloquium: The transport properties of graphene: An introduction
• Valley polarization in MoS2 monolayers by optical pumping
• The electronic properties of graphene
• Quantum pumping in graphene

Cited by

• Strain-induced pseudomagnetic field in the Dirac semimetal borophene
• Transmission spectra and valley processing of graphene and carbon nanotube superlattices with inter-valley coupling
• Valleytronics in merging Dirac cones: All-electric-controlled valley filter, valve and universal reversible logic gate
• Quantum charge pumping in graphene-based devices: When lattice defects do help
• Generalizing the Fermi velocity of strained graphene from uniform to nonuniform strain
• Graphene Nanobubbles as Valley Filters and Beam Splitters
• Gauge fields in graphene with nonuniform elastic deformations: A quantum field theory approach

Related

• Manipulation of Valley Isospins in Strained Graphene for Valleytronics
• Strained graphene structures: from valleytronics to pressure sensing
• Pseudo Electric Field and Pumping Valley Current in Graphene Nano-bubbles
• Direct observation of valley-hybridization and universal symmetry of graphene with mesoscopic conductance fluctuations
• The unconventional two-parameter quantum valley pumping in graphene with a topological line defect