Dependence of the flux flow viscosity coefficient on the Ginzburg-Landau parameter κ in superconducting indium films

✍ Scribed by T. Takayama; A. K. Raychaudhuri; L. Rinderer

• Publisher: Springer US
• Year: 1980
• Tongue: English
• Weight: 397 KB
• Volume: 40
• Category: Article
• ISSN: 0022-2291
• DOI: 10.1007/bf00119522

✦ Synopsis

The flux flow viscosity coefficient b -1 (in units of qboHc• -e) of vacuumdeposited indium thin films with low K values (1.0-2.8) is measured at temperatures between 0.STc and 0.98T~ in the weak magnetic field region. At --i each temperature, b decreases as K increases for K larger than 1.7. The --l * 9 decrease of b with mcreasmg K is more rapid as the temperature Tncreases. From an analysis of the present results as well as the existing data on intermediate-and high-K superconducting alloys, the relation between b -1 and K is established over a wide range of K. The dependence of b -1 "on K is qualitatively explained by taking into account the contribution of the normal electron dissipation to the viscosity coefficient in the Bardeen-Stephen model.