Theoretical interpretation of the variety of spin gap in high-Tc cuprates

S. Onoda, M. Imada

Research output: Contribution to journalArticle

Abstract

Magnetic properties of underdoped high-Tc cuprates characterized by a spin gap are interpreted in a unified scheme based on the mode-mode coupling theory. By taking one phenomenological relation for the damping rate of the collective modes, it takes account of two different types of pseudogap behavior in spin excitations and spin gap: (I) the damping rate of spin excitations decreases as the temperature decreases, but the spin correlation length does not; (II) the spin correlation length itself turns to decrease. In case (I), low-energy spectral weights shift to higher energies near the spin gap determined by the superconducting transition temperature, which reproduces the observed resonance peak.

Original languageEnglish
Pages (from-to)221-224
Number of pages4
JournalJournal of Physics and Chemistry of Solids
Volume62
Issue number1-2
DOIs
Publication statusPublished - 2001 Jan

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ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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