| Autor: |
Hriscu, A. M., Nazarov, Yu. V. |
| Rok vydání: |
2010 |
| Předmět: |
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| Zdroj: |
Physical Review B 83, 174511 (2011) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevB.83.174511 |
| Popis: |
In order to illustrate the emergence of Coulomb blockade from coherent quantum phase-slip processes in thin superconducting wires, we propose and theoretically investigate two elementary setups, or "devices". The setups are derived from Cooper-pair box and Cooper-pair transistor, so we refer to them as QPS-box and QPS-transistor, respectively. We demonstrate that the devices exhibit sensitivity to a charge induced by a gate electrode, this being the main signature of Coulomb blockade. Experimental realization of these devices will unambiguously prove the Coulomb blockade as an effect of coherence of phase-slip processes. We analyze the emergence of discrete charging in the limit strong phase-slips. We have found and investigated six distinct regimes that are realized depending on the relation between three characteristic energy scales: inductive and charging energy, and phase-slip amplitude. For completeness, we include a brief discussion of dual Josephson-junction devices. |
| Databáze: |
arXiv |
| Externí odkaz: |
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