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

Shigeki Onoda; Masatoshi Imada

doi:10.1016/S0921-4526(99)02346-7

d_x2-y2-wave pairing fluctuations and spin pseudogap in high-T_c cuprates

Shigeki Onoda^*, Masatoshi Imada

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

Pseudogap phenomena in high-T_c. cuprates are examined. The effective action for 2D electron systems with antiferromagnetic (AFM) and d_x2-y2-wave superconducting (dSC) fluctuations is considered. By the SCR (self-consistent renormalization), the spin and the pairing correlation lengths, ξ_σand ξ_d, 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 ξ_d 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.

Original language	English
Pages (from-to)	671-672
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	284-288
Issue number	PART I
DOIs	https://doi.org/10.1016/S0921-4526(99)02346-7
Publication status	Published - 2000
Externally published	Yes

Keywords

Pairing fluctuations
Pseudogap
Spin fluctuations

ASJC Scopus subject areas

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

Access to Document

10.1016/S0921-4526(99)02346-7

Cite this

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title = "dx2-y2-wave pairing fluctuations and spin pseudogap in high-Tc cuprates",

abstract = "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.",

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doi = "10.1016/S0921-4526(99)02346-7",

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journal = "Physica B: Condensed Matter",

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TY - JOUR

T1 - dx2-y2-wave pairing fluctuations and spin pseudogap in high-Tc cuprates

AU - Onoda, Shigeki

AU - Imada, Masatoshi

PY - 2000

Y1 - 2000

N2 - 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.

AB - 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.

KW - Pairing fluctuations

KW - Pseudogap

KW - Spin fluctuations

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