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Nanoelectromechanics of superconducting weak links (Review Article)
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View: Figures


Image of FIG. 1.
FIG. 1.

Probability density for the difference ΔΦ between the phases of the superconducting condensates of two bulk superconductors in contact via a movable superconducting grain. The grain periodically moves from one bulk superconductor to the other and the graph shows how the system evolves from a state with maximum to a state with minimum fluctuations as the number of rotation periods increases.

Image of FIG. 2.
FIG. 2.

Microwave-induced current J in units of I 0 = eω/π2, plotted as a function of the microwave frequency ω normalized to Ω = ω J /2. The result was obtained with χ0 = π/11, ħω/2EJ  = 0.001, w = 0.5 and q max = 7.

Image of FIG. 3.
FIG. 3.

Evolution of the distribution of the mechanical modes, pn , as a function of the quantum state n for different number of periods N (TV  = πħ/eV∼ 20 ns). Initially, pn is thermally distributed, pn ∝exp(−ω0/T), with T = 5ħω0. Here ħω0 = 10−6 eV, Δ = 10ħω0, l 0 = 20 pm, L = 100 nm, H = 1 T. The inset shows the probability amplitude for the system to scatter out of the initial Andreev state as a function of n for the same parameters.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Nanoelectromechanics of superconducting weak links (Review Article)