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Coulomb blockade of phase slip in mesoscopic charge-density-wave systems

✍ Scribed by Yositake Takane

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
78 KB
Volume
18
Category
Article
ISSN
1386-9477

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✦ Synopsis

Thermally activated phase-slip processes near electrical contacts are responsible for the nonlinear current-voltage characteristic in clean mesoscopic charge-density-wave systems. We calculate the phase-slip rate for a dislocation-loop nucleation and that for a dislocation-pair nucleation, by taking account of the in uence of long-range Coulomb interactions. It is shown that due to a large charging energy associated with dislocation lines, the phase-slip rate is greatly reduced for both the nucleation processes when the applied voltage is smaller than a threshold voltage. This indicates that the collective current below the threshold voltage is strongly suppressed by the Coulomb blockade of the phase slip.

πŸ“œ SIMILAR VOLUMES

Evidence for thermally-initiated phase-s
Evidence for thermally-initiated phase-slip in Charge-Density Waves in niobium triselenide
✍ J.C. Gill πŸ“‚ Article πŸ“… 1986 πŸ› Elsevier Science βš– 315 KB

Experiments on niobium triselenide between 80K and 135K indicate that the processes of phase-slip which occur near the current terminals during charge-density wave (CDW) conduction are initiated thermally. The same processes appear responsible for relaxing the metastable states of the CDW, by which