Thermal conductivity tensor of single crystalline Co-doped BaFe2As2

✍ Scribed by Y. Machida; K. Tomokuni; T. Isono; K. Izawa; Y. Nakajima; T. Tamegai

• Book ID: 104087072
• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 280 KB
• Volume: 43
• Category: Article
• ISSN: 1386-9477
• DOI: 10.1016/j.physe.2010.07.036

✦ Synopsis

Thermal conductivity tensor has been measured using single crystalline Co-doped BaFe 2 As 2 down to 0.1 K and under magnetic fields up to 7 T. We observe peak anomalies both in the thermal conductivity and the thermal Hall conductivity in the superconducting state as an indication of enhancement of the quasiparticle mean-free path. Furthermore, we find a residual T-linear term in the thermal conductivity possibly due to a finite quasiparticle density of states in the superconducting gap induced by impurity pair-breaking.