Half-quantum flux in spin-triplet superconducting rings with bias current
Kazushi Aoyama
DOI 10.1103/PhysRevB.108.L060502 · Physical Review B
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Abstract
Effects of a bias electric current have been theoretically investigated in a spin-triplet superconducting ring in a magnetic field. Based on the Ginzburg-Landau theory, we show that the bias current can stabilize a half-quantum-flux (HQF) state via couplings to the Zeeman field and the dipole-type spin-orbit interaction, the latter effect becoming active when the field is tilted from the ring axis. The emergence of the HQF state is reflected as a field-induced half-quantum shift in the Little-Parks (LP) oscillation in the critical current. Possible relevance to recent LP experiments is also discussed.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Pd 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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