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

doi:10.1126/science.1199595

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 journal › Article › peer-review

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 language	English
Pages (from-to)	328-330
Number of pages	2
Journal	Science
Volume	332
Issue number	6027
DOIs	https://doi.org/10.1126/science.1199595
Publication status	Published - 15 Apr 2011

Access to Document

10.1126/science.1199595

http://www.sciencemag.org/content/332/6027/328.full.pdf

The impact of the production and characterisation of graphene
(Participant) & (Participant)
Impact: Technological, Economic

Cite this

@article{11f1a9606c0a4a219989a0976ae5b0e2,

title = "Giant nonlocality near the dirac point in graphene",

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.",

author = "Abanin, {D. A.} and Morozov, {S. V.} and Ponomarenko, {L. A.} and Gorbachev, {R. V.} and Mayorov, {A. S.} and Katsnelson, {M. I.} and K. Watanabe and T. Taniguchi and Novoselov, {K. S.} and Levitov, {L. S.} and Geim, {A. K.}",

note = "Times Cited: 8",

year = "2011",

month = apr,

day = "15",

doi = "10.1126/science.1199595",

language = "English",

volume = "332",

pages = "328--330",

journal = "Science",

issn = "0036-8075",

publisher = "American Association for the Advancement of Science (A A A S)",

number = "6027",

}

TY - JOUR

T1 - Giant nonlocality near the dirac point in graphene

AU - Abanin, D. A.

AU - Morozov, S. V.

AU - Ponomarenko, L. A.

AU - Gorbachev, R. V.

AU - Mayorov, A. S.

AU - Katsnelson, M. I.

AU - Watanabe, K.

AU - Taniguchi, T.

AU - Novoselov, K. S.

AU - Levitov, L. S.

AU - Geim, A. K.

N1 - Times Cited: 8

PY - 2011/4/15

Y1 - 2011/4/15

N2 - 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.

AB - 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.

U2 - 10.1126/science.1199595

DO - 10.1126/science.1199595

M3 - Article

SN - 0036-8075

VL - 332

SP - 328

EP - 330

JO - Science

JF - Science

IS - 6027

ER -

Giant nonlocality near the dirac point in graphene

Abstract

Access to Document

Fingerprint

Impacts

The impact of the production and characterisation of graphene

Cite this