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Large electron—phonon interaction but low‐temperature superconductivity in lab 6
Author(s) -
Arko A. J.,
Crabtree G.,
Ketterson J. B.,
Mueller F. M.,
Walch P. F.,
Windmiller L. R.,
Fisk Z.,
Hoyt R. F.,
Mota A. C.,
Viswanathan R.,
Ellis D. E.,
Freeman A. J.,
Rath J.
Publication year - 2009
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.560090868
Subject(s) - superconductivity , condensed matter physics , phonon , electron , physics , high temperature superconductivity , materials science , quantum mechanics
Combined experimental and theoretical studies are reported of the Fermi surface, band structure, generalized magnetic susceptibility, electron‐phonon enhancement factor λ and superconducting transition temperature T T of LaB 6 . Whereas the unusually large λ values, ranging from 1.0 to 2.5, are expected to result in high T T values, T T is observed to be only 0.122°K. These results further emphasize the need for appropriate theoretical formulations for these systems.