Spin pseudogap in the S=1/2 chain material Sr2CuO3 with impurities

G. Simutis, S. Gvasaliya, N. S. Beesetty, T. Yoshida, J. Robert, S. Petit, A. I. Kolesnikov, M. B. Stone, F. Bourdarot, H. C. Walker, D. T. Adroja, O. Sobolev, C. Hess, T. Masuda, A. Revcolevschi, B. Büchner, A. Zheludev

Research output: Contribution to journalArticlepeer-review

Abstract

The low-energy magnetic excitation spectrum of the Heisenberg antiferromagnetic S=1/2 chain system Sr2CuO3 with Ni and Ca impurities is studied by neutron spectroscopy. In all casesa defect-induced spectral pseudogap is observed and shown to scale proportionately to the number of scattering centers in the spin chains.

Original languageEnglish
Pages (from-to)13028-13037
Number of pages10
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume60
Issue number18
DOIs
Publication statusPublished - 1999
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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