TY - JOUR
T1 - Effect of quantum noise on Coulomb blockade in normal tunnel junctions at high voltages
AU - Penttilä, J.
AU - Parts,
AU - Hakonen, P.
AU - Paalanen, M.
AU - Sonin, E.
PY - 2000
Y1 - 2000
N2 - We have investigated the asymptotic behavior of normal tunnel junctions at voltages where even the best Ohmic environments start to look like RC transmission lines. In the experiments, this is manifested by an exceedingly slow approach to the linear behavior above the Coulomb gap. As expected on the basis of the quantum theory taking into account interaction with the environmental modes, better fits are obtained using (Formula presented) than (Formula presented) dependence for the asymptote. These results agree with the horizon picture if the frequency-dependent phase velocity is employed instead of the speed of light in order to determine the extent of the surroundings seen by the junction.
AB - We have investigated the asymptotic behavior of normal tunnel junctions at voltages where even the best Ohmic environments start to look like RC transmission lines. In the experiments, this is manifested by an exceedingly slow approach to the linear behavior above the Coulomb gap. As expected on the basis of the quantum theory taking into account interaction with the environmental modes, better fits are obtained using (Formula presented) than (Formula presented) dependence for the asymptote. These results agree with the horizon picture if the frequency-dependent phase velocity is employed instead of the speed of light in order to determine the extent of the surroundings seen by the junction.
UR - http://www.scopus.com/inward/record.url?scp=0001373957&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.61.10890
DO - 10.1103/PhysRevB.61.10890
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AN - SCOPUS:0001373957
SN - 1098-0121
VL - 61
SP - 10890
EP - 10897
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 16
ER -