Pauli-limited critical field of Ba/sub 1-x/K/sub x/BiO/sub 3/ determined from quasiparticle tunneling
| Autor: | E.H. Hartford, P. M. Tedrow, E.S. Hellman, G.M. Roesler |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
Superconductivity
Materials science High-temperature superconductivity Magnetoresistance Condensed matter physics Condensed Matter Physics Electronic Optical and Magnetic Materials law.invention Tunnel effect law Condensed Matter::Superconductivity Scattering rate Tunnel diode Ginzburg–Landau theory Electrical and Electronic Engineering Critical field |
| Zdroj: | IEEE Transactions on Applied Superconductivity. 3:1280-1282 |
| ISSN: | 1558-2515 1051-8223 |
| Popis: | A planar tunnel diode with Ba/sub 1-x/K/sub x/BiO/sub 3/ (BKBO) and Ag electrodes were fabricated. The dynamic conductance of the junction was similar to that found with conventional BCS superconductors. Using weak coupling theory, the undepaired transition temperature, spin-orbit scattering rate, and diffusion constant of BKBO were determined. The Pauli-limited critical field was calculated and compared to the measured resistive transitions of the BKBO film in magnetic fields. The Pauli-limited field is observed to occur generally at the field where the normal-state resistance is restored. > |
| Databáze: | OpenAIRE |
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