Quantization of adiabatic pumped charge in the presence of superconducting lead
Jian Wang, Baigeng Wang
DOI 10.1103/PhysRevB.65.153311 · Physical Review B
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Abstract
We investigate the parametric electron pumping of a double barrier structure in the presence of a superconducting lead. The parametric pumping is facilitated by cyclic variation of the barrier heights x1 and x2 of the barriers. In the weak-coupling regime, there exists a resonance line in the parameter space (x1,x2) so that the energy of the quasibound state is in line with the incoming Fermi energy. Levinson et al. found recently that the pumped charge for each pumping cycle is quantized with Q=2e for normal structure when the pumping contour encircles the resonance line. In the presence of a superconducting lead, we find that the pumped charge is quantized with the value 2e.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Pb 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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