Superconductivity and the c axis spectral weight of high-T(c) superconductors

L. B. Ioffe, A. J. Millis

Research output: Contribution to journalArticlepeer-review

98 Scopus citations


The temperature dependence of the c axis spectral weight (frequency integral of the interplane conductivity) of high transition temperature (high-T(c)) superconductors is shown to be a probe of thermal and quantal fluctuations of the phase of the superconducting order parameter. The behavior of underdoped cuprates is shown to be a natural consequence of superconducting pairing without long-ranged phase coherence. Very underdoped cuprates are found to have strong phase fluctuations, even for temperatures much less than the transition temperature.

Original languageEnglish (US)
Pages (from-to)1241-1244
Number of pages4
Issue number5431
StatePublished - Aug 20 1999

ASJC Scopus subject areas

  • General


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