Change of the dynamics of internal fields in the normal state of La 2-xSrxCuO4 observed by muon-spin-relaxation

Isao Watanabe, Tadashi Adachi, Satoshi Yairi, Yoji Koike, Kanetada Nagamine

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11 Citations (Scopus)

Abstract

Zero-field and longitudinal-field muon-spin-relaxation measurements have been carried out in order to investigate the electronic and magnetic states in La2-xSrxCuO4 over a wide range of hole concentration from x = 0.024 to 0.15. It has been found that the dynamic depolarization rate of muon spins in zero field starts to increase monotonically with decreasing temperature at a high temperature around 100 K. This effect is enhanced around the hole concentration of 1/8 per Cu but easily suppressed by the application of a small external field of a couple of ten gauss. The present study suggests that the dynamics of fluctuating internal fields at the muon site in the normal state of La2-xSrxCuO4 changes at a high temperature around 100K and is correlated with the mobility of holes. Possible relationships with spin-hole stripes and the spin-gap state in the normal state are discussed.

Original languageEnglish
Article number124716
Journaljournal of the physical society of japan
Volume77
Issue number12
DOIs
Publication statusPublished - 2008 Dec 1

Keywords

  • High-T
  • LaSr CuO
  • Spin gap
  • Stripes
  • μSR

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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