COHERENT-PHOTON-ASSISTED COTUNNELING IN A COULOMB-BLOCKADE DEVICE

Authors
FLENSBERG K
Citation
K. Flensberg, COHERENT-PHOTON-ASSISTED COTUNNELING IN A COULOMB-BLOCKADE DEVICE, Physical review. B, Condensed matter, 55(19), 1997, pp. 13118-13123
Citations number
24
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
55
Issue
19
Year of publication
1997
Pages
13118 - 13123
Database
ISI
SICI code
0163-1829(1997)55:19<13118:CCIACD>2.0.ZU;2-1
Abstract
We study cotunneling in a double-junction Coulomb blockade device unde r the influence of time-dependent potentials. It is shown that the ac bias lends to photon-assisted cotunneling that in some eases may domin ate the transport. We derive a general nonperturbative expression for the tunneling current in the presence of oscillating potentials and gi ve a perturbative expression for the photon-assisted cotunneling curre nt.