Quantum phase diffusion in ac-driven superconducting atomic point contacts
M. F. Carusela, J. Ankerhold
DOI 10.1103/PhysRevB.85.134509 · Physical Review B
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Abstract
The impact of quantum fluctuations on the phase diffusion in resistively shunted superconducting quantum points subject to an external ac voltage is studied. Based on an extension of the classical Smoluchowski equation to the quantum regime, numerical results for fractional and integer Shapiro resonances are investigated to reveal characteristic features of quantum effects. It is shown that, typically in the quantum regime, the broadening of resonances cannot be described simply by an effective temperature.
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| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Al 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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