We have measured the Hall component of the thermal conductivity κxy e in the mixed state of YBCO. κxy e is observed to be unusually large. From its strong field dependence we deduce the quasi-particle mean free path ℓ0. Between 90 K and 15 K, ℓ0 increases rapidly from 80 Å to 2500 Å.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics