Anomalous Nonlocal Resistance and Spin-Charge Conversion Mechanisms in Two-Dimensional Metals

Chunli Huang, Y. D. Chong, Miguel A. Cazalilla

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


We uncover two anomalous features in the nonlocal transport behavior of two-dimensional metallic materials with spin-orbit coupling. First, the nonlocal resistance can have negative values and oscillate with distance, even in the absence of a magnetic field. Second, the oscillations of the nonlocal resistance under an applied in-plane magnetic field (the Hanle effect) can be asymmetric under field reversal. Both features are produced by direct magnetoelectric coupling, which is possible in materials with broken inversion symmetry but was not included in previous spin-diffusion theories of nonlocal transport. These effects can be used to identify the relative contributions of different spin-charge conversion mechanisms. They should be observable in adatom-functionalized graphene, and they may provide the reason for discrepancies in recent nonlocal transport experiments on graphene.

Original languageEnglish
Article number136804
JournalPhysical Review Letters
Issue number13
StatePublished - Sep 28 2017

Bibliographical note

Publisher Copyright:
© 2017 American Physical Society.

ASJC Scopus subject areas

  • General Physics and Astronomy


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