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Universal Conductance Fluctuations as a direct probe to valley coherence and universality class of disordered graphene

Kochat, Vidya and Pal, Atindra Nath and Ghost, Arindam (2014) Universal Conductance Fluctuations as a direct probe to valley coherence and universality class of disordered graphene. In: PHYSICS OF SEMICONDUCTORS , 1566 . pp. 161-162.

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Official URL: http://dx.doi.org/10.1063/1.4848335

Abstract

We demonstrate that the universal conductance fluctuations (UCF) can be used as a direct probe to study the valley quantum states in disordered graphene. The UCF magnitude in graphene is suppressed by a factor of four at high carrier densities where the short-range disorder essentially breaks the valley degeneracy of the K and K' valleys, leading to a density dependent crossover of symmetry class from symplectic near the Dirac point to orthogonal at high densities.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to the AMER INST PHYSICS, 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Depositing User: Id for Latest eprints
Date Deposited: 24 Apr 2014 07:27
Last Modified: 24 Apr 2014 10:34
URI: http://eprints.iisc.ac.in/id/eprint/48892

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