Graphene: junctions and STM spectra

Maiti, M. ; Saha, K. ; Sengupta, K. (2012) Graphene: junctions and STM spectra International Journal of Modern Physics B, 26 (21). 1242002_1-1242002_38. ISSN 0217-9792

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Official URL: http://www.worldscientific.com/doi/abs/10.1142/S02...

Related URL: http://dx.doi.org/10.1142/S0217979212420027

Abstract

The presence of low-energy Dirac-like quasiparticles is one of the central features responsible for plethora of recent theoretical and experimental studies on graphene. In this review, we focus on the effect of the Dirac nature of these quasiparticles on two separate aspects. The first of these involves transport across superconducting graphene junctions with barriers of thickness d and arbitrary gate voltages V0 applied across the barrier region. The second aspect involves study of the presence of localized magnetic impurities in graphene in which we discuss the unconventional nature of Kondo physics in graphene and the tunablity of Kondo effect with a gate voltage. We also chart out the nature of scanning tunneling conductance spectra for both doped and undoped graphene in the presence of impurities and discuss the effect of Dirac nature of graphene quasiparticles on such spectra. In particular, we provide a detailed analysis of the phenomenon that that the position of the impurity in the graphene matrix plays a crucial role in determining the nature of the STM specta.

Item Type:Article
Source:Copyright of this article belongs to World Scientific Publishing.
Keywords:Graphene; STM Spectra; Josephson Effect; Superconducting Junctions
ID Code:94392
Deposited On:15 Nov 2012 06:06
Last Modified:15 Nov 2012 06:06

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