2000/05/30 by R. Movshovich, Movshovich, R., E. Moshopoulou +8
Engineering · Physics and Astronomy · #FOS: Physical sciences #Physics of Superconductivity and Magnetism #Spacecraft and Cryogenic Technologies #Strongly Correlated Electrons (cond-mat.str-el) #Superconducting Materials and Applications #Superconductivity (cond-mat.supr-con) #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.48550/arxiv.cond-mat/0005529
4 pages, 2 figures included, new in this version: room to 5K thermal conductivity of insulating Y-doped Bi2212, in pannel (b) of Fig. 1 and related discussion; corrected estimate of the electonic mean free path in superconducting BSCCO
openalex publication_date 2000/05/30 · arxiv created 2002/01/09 · arxiv updated 2009/11/30 · openalex created_date 2019/06/27 · openalex updated_date 2026/07/28
In order to separate electronic and phonon mechanisms of thermal transport in high temperature superconducting Bi2212, we measured thermal conductivity of single crystals of Y-doped Bi2212, an insulating analogue of pure Bi2212, in the temperature range between 40 mK and 2 K. Temperature dependence of the thermal conductivity of insulating samples changes from T1.7 between 1 and 2 K to T2.6 below 200 mK, indicating saturation of the phonon mean free path with decreasing temperature. Overall, thermal conductivity of the insulating samples (which is due entirely to phonons) is strongly suppressed in comparison to that of the superconducting samples. Therefore, a large (and at the lowest temperatures, predominant) part of the total thermal transport in superconducting Bi2212 is due to electrons.