Quantum dynamics of a vortex in a Josephson junction
Hong Li, Shun-Qing Shen, Jiu-Qing Liang, Wu-Ming Liu
DOI 10.1103/PhysRevB.72.014546 · Physical Review B
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Abstract
We investigate the tunneling character of vortex in an asymmetrical potential well with a finite barrier by using the periodic instanton method. We obtain the total decay rate which is valid for the entire range of temperature and show how it reduces to the appropriate results for the classical thermal activation at high temperatures, the thermally assisted tunneling at intermediate temperatures, and the pure quantum tunneling at low temperature. We can even give the exact definition of the “crossover” temperature and find experimental data to support our theoretical analysis.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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