Origins of Nonlocality near the Dirac Point in Graphene
We present an experimental study of nonlocal electrical signals near the Dirac point in graphene. The in-plane magnetic field dependence of the nonlocal signal confirms the role of spin in this effect, as expected from recent predictions of Zeeman spin Hall effect in graphene, but our experiments sh...
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| Published in | arXiv.org |
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| Main Authors | , , |
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| Language | English |
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26.09.2013
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| Abstract | We present an experimental study of nonlocal electrical signals near the Dirac point in graphene. The in-plane magnetic field dependence of the nonlocal signal confirms the role of spin in this effect, as expected from recent predictions of Zeeman spin Hall effect in graphene, but our experiments show that thermo-magneto-electric effects also contribute to nonlocality, and the effect is sometimes stronger than that due to spin. Thermal effects are seen to be very sensitive to sample details that do not influence other transport parameters. |
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| AbstractList | We present an experimental study of nonlocal electrical signals near the
Dirac point in graphene. The in-plane magnetic field dependence of the nonlocal
signal confirms the role of spin in this effect, as expected from recent
predictions of Zeeman spin Hall effect in graphene, but our experiments show
that thermo-magneto-electric effects also contribute to nonlocality, and the
effect is sometimes stronger than that due to spin. Thermal effects are seen to
be very sensitive to sample details that do not influence other transport
parameters. We present an experimental study of nonlocal electrical signals near the Dirac point in graphene. The in-plane magnetic field dependence of the nonlocal signal confirms the role of spin in this effect, as expected from recent predictions of Zeeman spin Hall effect in graphene, but our experiments show that thermo-magneto-electric effects also contribute to nonlocality, and the effect is sometimes stronger than that due to spin. Thermal effects are seen to be very sensitive to sample details that do not influence other transport parameters. |
| Author | Renard, Julien Folk, Joshua A Studer, Matthias |
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| BackLink | https://doi.org/10.1103/PhysRevLett.112.116601$$DView published paper (Access to full text may be restricted) https://doi.org/10.48550/arXiv.1309.7016$$DView paper in arXiv |
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| Copyright | 2013. This work is published under http://arxiv.org/licenses/nonexclusive-distrib/1.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. http://arxiv.org/licenses/nonexclusive-distrib/1.0 |
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| DOI | 10.48550/arxiv.1309.7016 |
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| Snippet | We present an experimental study of nonlocal electrical signals near the Dirac point in graphene. The in-plane magnetic field dependence of the nonlocal signal... We present an experimental study of nonlocal electrical signals near the Dirac point in graphene. The in-plane magnetic field dependence of the nonlocal signal... |
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| SubjectTerms | Dependence Graphene Hall effect Parameter sensitivity Physics - Mesoscale and Nanoscale Physics Temperature effects |
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| Title | Origins of Nonlocality near the Dirac Point in Graphene |
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