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Transverse current response in armchair graphene ribbons

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journal contribution
posted on 2024-11-15, 04:59 authored by Junfeng Liu, Zhongshui Ma, Chao ZhangChao Zhang
We demonstrate that the direction of transverse current in graphene nanoribbons under a magnetic field can be tuned with a gate voltage. It is shown that for armchair ribbons there exist extra energy regions where the direction of the Hall current can be switched between positive and negative values. The directional change of the Hall current coincides with the special points where the two lowest energy bands in the spectrum become degenerate (band crossing points). The number of such degenerate points depends on the width of the ribbons. The dependence of the sign reversal on the gate voltage provides a mechanism for tuning transverse response in graphene based devices.

History

Citation

Liu, J., Ma, Z. and Zhang, C. (2011). Transverse current response in armchair graphene ribbons. Journal of Applied Physics, 110 (3), 034313-1-034313-5.

Journal title

Journal of Applied Physics

Volume

110

Issue

3

Pagination

034313-1-034313-5

Language

English

RIS ID

38787

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