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Nonlinear transport characteristics of mesoscopic tunnel junctions far from equilibrium

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics
We study the tunneling transport through a mesoscopic tunnel junction in the far-from-equilibrium regime at relatively low temperatures. We show that the current-voltage characteristics are significantly modified as compared to the usual quasiequilibrium results by lifting the suppression due to the Coulomb blockade. These effects are important in realistic tunnel junctions. We study the high-impedance case in detail to explain the underlying physics and construct a more realistic theoretical model for the case of a metallic junction, taking into account dynamic Coulomb interaction. This dynamic screening further reduces the effect of the Coulomb blockade.
Research Organization:
Argonne National Laboratory (ANL)
Sponsoring Organization:
SC OFFICE OF BASIC ENERGY SCIENCES
DOE Contract Number:
AC02-06CH11357
OSTI ID:
1050819
Report Number(s):
ANL/MSD/JA-74165
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 4 Vol. 86; ISSN 1098-0121
Country of Publication:
United States
Language:
ENGLISH

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