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

S. Onoda, Masatoshi 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 1
Externally publishedYes

Fingerprint

cuprates
Damping
Superconducting transition temperature
Magnetic properties
damping
Temperature
coupled modes
excitation
transition temperature
magnetic properties
energy
shift

ASJC Scopus subject areas

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

Cite this

Theoretical interpretation of the variety of spin gap in high-Tc cuprates. / Onoda, S.; Imada, Masatoshi.

In: Journal of Physics and Chemistry of Solids, Vol. 62, No. 1-2, 01.01.2001, p. 221-224.

Research output: Contribution to journalArticle

@article{22baf6161a8e40dead666f2142b397b8,
title = "Theoretical interpretation of the variety of spin gap in high-Tc cuprates",
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.",
author = "S. Onoda and Masatoshi Imada",
year = "2001",
month = "1",
day = "1",
doi = "10.1016/S0022-3697(00)00133-5",
language = "English",
volume = "62",
pages = "221--224",
journal = "Journal of Physics and Chemistry of Solids",
issn = "0022-3697",
publisher = "Elsevier Limited",
number = "1-2",

}

TY - JOUR

T1 - Theoretical interpretation of the variety of spin gap in high-Tc cuprates

AU - Onoda, S.

AU - Imada, Masatoshi

PY - 2001/1/1

Y1 - 2001/1/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0034826283&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0034826283&partnerID=8YFLogxK

U2 - 10.1016/S0022-3697(00)00133-5

DO - 10.1016/S0022-3697(00)00133-5

M3 - Article

AN - SCOPUS:0034826283

VL - 62

SP - 221

EP - 224

JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

SN - 0022-3697

IS - 1-2

ER -