SUPERCONDUCTIVITY DUE TO CHARGE DENSITY WAVE INSTABILITY IN Ba1−xKxBiO3 COMPOUNDS
1989 ◽
Vol 03
(17)
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pp. 1267-1273
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Keyword(s):
Recent experiments seem to indicate that the superconductivity in Ba 1−x K x BiO 3 type compound occurs in the metallic state before its transformation to the charge density wave (CDW) state as the doping parameter x is reduced. Assuming the local breathing modes around Bi-atoms are responsible for both the CDW and superconducting states. We show that the superconducting transition temperature T c can be substantially enhanced as x approaches the CDW instability from the metallic side. Similar calculation has been carried out for a two-dimensional system and the results are in qualitative agreement with a recent Monte Carlo simulation.
1981 ◽
Vol 50
(5)
◽
pp. 1560-1569
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Keyword(s):
1985 ◽
Vol 54
(11)
◽
pp. 909-912
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Keyword(s):
2000 ◽
Vol 14
(10)
◽
pp. 345-354
◽
1986 ◽
Vol 59
(10)
◽
pp. 647-652
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Keyword(s):
1989 ◽
Vol 62
(12)
◽
pp. 1396-1399
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Keyword(s):