Enhancement of maximum superconducting temperature by applying pressure and reducing the charge transfer gap
Yi-Hsuan Liu,
Huan-Kuang Wu,
Ting-Kuo Lee
Abstract:Recent Scanning Tunneling Spectra(STS) measurement on underdoped cuprate discovers the increase of the maximum superconducting transition temperature T c when the size of charge transfer gap (CTG) is reduced. Applying pressure is another well known method to increase maximum T c . However, these pressure experiments also found another puzzle that T c is enhanced in underdoped and optimal doped samples but suppressed in overdoped. Here we present a possible mechanism based on the charge fluctuation to explain b… Show more
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