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Specific heat evidence for strong coupling in YBa sub 2 Cu sub 3 O sub 7

Conference ·
OSTI ID:6386801
Specific heat data for YBa{sub 2}Cu{sub 3}O{sub 7} are consistent with {gamma} = 15 {plus minus} 3 mJ/mole{center dot}K{sup 2} and 2{Delta}{sub 0}/k{Tc} = 6.8 {plus minus} 0.6. These results indicate that strong-coupling effects are present but that the coupling is unlikely to be predominantly a conventional electron-phonon interaction. 8 refs., 1 fig.
Research Organization:
Lawrence Berkeley Lab., CA (USA)
Sponsoring Organization:
DOE/ER
DOE Contract Number:
AC03-76SF00098
OSTI ID:
6386801
Report Number(s):
LBL-29411; CONF-900817--2; ON: DE91004246
Country of Publication:
United States
Language:
English