dx2-y2-wave pairing fluctuations and spin pseudogap in high-Tc cuprates

Shigeki Onoda, Masatoshi Imada

研究成果: Article


Pseudogap phenomena in high-Tc. cuprates are examined. The effective action for 2D electron systems with antiferromagnetic (AFM) and dx2-y2-wave superconducting (dSC) fluctuations is considered. By the SCR (self-consistent renormalization), the spin and the pairing correlation lengths, ξσand ξd, and 1/T1 T are calculated. The pseudogap (PG) emerges when dSC short-range order (SRO) dominates over AFM-SRO. When damping for the spin wave strongly depends on ξd through the formation of precursor singlets around (π, 0) and (0, π) points, the spin PG in underdoped cuprates is reproduced. Otherwise, the PG region shrinks as in overdoped cuprates.

ジャーナルPhysica B: Condensed Matter
発行部数PART I
出版物ステータスPublished - 2000 1 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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