ISSN:
1089-7550
Quelle:
AIP Digital Archive
Thema:
Physik
Notizen:
The study of the thermal conductivity of high temperature superconductors can provide a theoretical understanding of the nature of the charge carriers, phonons, and scattering processes between them. From the technological point of view, thermal conductivity influences the growth rate of a local hot spot in a superconductor and therefore it is an important parameter in thermal stability analysis. Recently, the magnetothermal conductivity has been considered to be a key factor in the understanding of the vortex mechanisms. Here we report thermal conductivity measurements of bulk Bi2Sr2CanCun+1Ox superconductors in an applied magnetic field up to 20 T. The measurements are taken with field directions both parallel and perpendicular to the a-b plane of the samples for a wide range of temperatures. The phonon scattering mechanism at vortex sites, thermal transport mechanism in both a-b and c directions, as well as across grain boundaries will be discussed. © 1996 American Institute of Physics.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1063/1.362706
