Even-odd electron number effects in a small superconducting island: Magnetic-field dependence
M. T. Tuominen, J. M. Hergenrother, T. S. Tighe, M. Tinkham
DOI 10.1103/PhysRevB.47.11599 · Physical Review B
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Abstract
As a consequence of electron pairing, the free energy of a small superconducting island at low temperatures depends on whether it contains an even or odd number of electrons, i.e., on the parity of the total number of electrons. This produces a 2e periodicity in the tunneling current versus gate-induced charge characteristics of a superconducting single-electron tunneling transistor. Magnetic-field data show that the 2e to e periodicity crossover temperature decreases approximately as H2, in good agreement with our statistical mechanical parity model extended to include magnetic-field pair-breaking effects.
Source-reported materials — not catalogue approval
| 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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