Electronic instability during vortex motion in cuprate superconductors Regime of low and high magnetic fields
✍ Scribed by S.G. Doettinger; R.P. Huebener; A. Kühle
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 346 KB
- Volume
- 251
- Category
- Article
- ISSN
- 0921-4534
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✦ Synopsis
The critical velocity v~ associated with the electronic instability predicted by Larkin and Ovchinnikov displays a cross-over effect from magnetic-field independent behavior at high fields to the proportionality v~* ~ B-x/2 at low fields. This low-field behavior results from the fact that v~ multiplied with the inelastic quasiparticle scattering time zin must reach at least the intervortex distance, thereby ensuring spatial homogeneity of the nonequilibrium quasiparticle distribution. At high magnetic fields the flux-flow instability becomes unobservable due to the onset of fluctuation effects contributing to the resistivity.