Giant nonlocality near the dirac point in graphene

D. A. Abanin, S. V. Morozov, L. A. Ponomarenko, R. V. Gorbachev, A. S. Mayorov, M. I. Katsnelson, K. Watanabe, T. Taniguchi, K. S. Novoselov, L. S. Levitov, A. K. Geim

Research output: Contribution to journalArticlepeer-review

224 Scopus citations

Abstract

Transport measurements have been a powerful tool for discovering electronic phenomena in graphene. We report nonlocal measurements performed in the Hall bar geometry with voltage probes far away from the classical path of charge flow. We observed a large nonlocal response near the Dirac point in fields as low as 0.1 tesla, which persisted up to room temperature. The nonlocality is consistent with the long-range flavor currents induced by the lifting of spin/valley degeneracy. The effect is expected to contribute strongly to all magnetotransport phenomena near the neutrality point.

Original languageEnglish (US)
Pages (from-to)328-330
Number of pages3
JournalScience
Volume332
Issue number6027
DOIs
StatePublished - Apr 15 2011

All Science Journal Classification (ASJC) codes

  • General

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