Dynamic Cooper-pair breaking by tunnel injection of quasiparticles into a high-Tc YBa2Cu3O7 superconductor
I. Iguchi, K. Nukui, K. Lee
DOI 10.1103/PhysRevB.50.457 · Physical Review B
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Abstract
The measurements on strong quasiparticle injection through a tunnel barrier into a high-Tc YBa2Cu3O7 (YBCO) bicrystal film/junction or a YBCO film are presented. With an increase of tunnel injection current, both the Josephson and film critical currents decreased and were driven to zero to yield the normal state at a certain critical injection current density which ranged 20–140 A/cm2 for 70 to a few 100 mV voltage bias. The results are qualitatively different from simple heating phenomenon and reflect nonthermal nature of high-Tc superconductors under injection.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 75 | Pressure not reported | unknown |
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