Bhattacharjee, Subhro ; Maiti, Moitri ; Sengupta, K. (2007) Theory of tunneling conductance of graphene normal metal-insulator-superconductor junctions Physical Review B: Condensed Matter and Materials Physics, 76 (18). 184514_1-184514_7. ISSN 1098-0121
Full text not available from this repository.
Official URL: http://prb.aps.org/abstract/PRB/v76/i18/e184514
Related URL: http://dx.doi.org/10.1103/PhysRevB.76.184514
Abstract
We calculate the tunneling conductance of a graphene normal metal-insulator-superconductor (NIS) junction with a barrier of thickness d and with an arbitrary voltage V0 applied across the barrier region. We demonstrate that the tunneling conductance of such a NIS junction is an oscillatory function of both d and V0. We also show that the periodicity and amplitude of such oscillations deviate from their universal values in the thin barrier limit as obtained in an earlier work [ S. Bhattacharjee and K. Sengupta Phys. Rev. Lett. 97 217001 (2006)] and become a function of the applied voltage V0. Our results reproduce the earlier results on tunneling conductance of such junctions in the thin [ S. Bhattacharjee and K. Sengupta Phys. Rev. Lett. 97 217001 (2006)] and zero [ C. W. J. Beenakker Phys. Rev. Lett. 97 067007 (2006)] barrier limits as special limiting cases. We discuss the experimental relevance of our results.
Item Type: | Article |
---|---|
Source: | Copyright of this article belongs to The American Physical Society. |
ID Code: | 81688 |
Deposited On: | 07 Feb 2012 06:16 |
Last Modified: | 07 Feb 2012 06:16 |
Repository Staff Only: item control page