Anomalous Magnetic Susceptibility and Hall Effect from Valley Degrees of Freedom

2011/03/30 by Tianyi Cai, Cai, Tianyi, Wang Yao +7
Physics and Astronomy · #FOS: Physical sciences #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #cond-mat.mes-hall

paper · pdf · doi:10.48550/arxiv.1103.5851

12 pages, 5 figures

arxiv created 2011/03/30 · arxiv updated 2011/03/31

Abstract

We study the magnetic and transport properties of epitaxial graphene films in this letter. We predict enhanced signal of magnetic susceptibility and relate it to the intrinsic valley magnetic moments. There is also an anomalous contribution to the ordinary Hall effect, which is due to the valley dependent Berry phase or valley-orbit coupling.

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