Zn-doping effects on low-energy spin excitations in La 1.85Sr0.15CuO4

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5 Citations (Scopus)

Abstract

A review is given on neutron scattering study of Zn-doping effects on low-energy spin excitations in optimally hole-doped La2-xSr xCuO4. As Zn-impurities increase, energy spectra of incommensurate spin excitations show a dramatic change from a well defined "spin gap" state to a gap-less excitation with static antiferromagnetic (AF) spin correlations. This modification of the gap structure can be understood as not simply reduction of the gap energy but a development of the Zn-induced in-gap excitation, which becomes more static with increasing Zn. An inhomogeneous mixed state of the in-gap spin excitation and the superconductivity is discussed with referring to the swiss cheese model.

Original languageEnglish
Pages (from-to)34-41
Number of pages8
JournalPhysica C: Superconductivity and its applications
Volume392-396
Issue numberPART 1
DOIs
Publication statusPublished - 2003 Oct
EventProceedings of the 15th International Symposium on Superconduc - Yokohama, Japan
Duration: 2002 Nov 112002 Nov 13

Keywords

  • La-based cuprates
  • Neutron scattering
  • Spin excitation
  • Spin gap
  • Zn-substitution

ASJC Scopus subject areas

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

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