Cu spin dynamics in the overdoped regime of La2-x Srx Cu1-y Zny O4 probed by muon spin relaxation

Risdiana, T. Adachi, N. Oki, S. Yairi, Y. Tanabe, K. Omori, Y. Koike, Takao Suzuki, I. Watanabe, A. Koda, W. Higemoto

Research output: Contribution to journalArticle

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Abstract

Muon-spin-relaxation measurements have been performed for partially Zn-substituted La2-x Srx Cu1-y Zny O4 with y=0-0.10 in the overdoped regime up to x=0.30. In the 3% Zn-substituted samples up to x=0.27, exponential-like depolarization of muon spins has been observed at low temperatures, indicating a Zn-induced slowing down of the Cu spin fluctuations. The depolarization rate decreases with increasing x, and almost no fast depolarization of muon spins has been observed for x=0.30 where superconductivity disappears. The present results suggest that there is no quantum critical point at x∼0.19. These results are discussed in terms of the stripe-pinning model and the phase-separation model.

Original languageEnglish
Article number054516
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume77
Issue number5
DOIs
Publication statusPublished - 2008 Feb 26
Externally publishedYes

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Spin dynamics
Depolarization
spin dynamics
muons
depolarization
Spin fluctuations
Superconductivity
Phase separation
critical point
superconductivity
Temperature

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Cu spin dynamics in the overdoped regime of La2-x Srx Cu1-y Zny O4 probed by muon spin relaxation. / Risdiana; Adachi, T.; Oki, N.; Yairi, S.; Tanabe, Y.; Omori, K.; Koike, Y.; Suzuki, Takao; Watanabe, I.; Koda, A.; Higemoto, W.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 77, No. 5, 054516, 26.02.2008.

Research output: Contribution to journalArticle

Risdiana, Adachi, T, Oki, N, Yairi, S, Tanabe, Y, Omori, K, Koike, Y, Suzuki, T, Watanabe, I, Koda, A & Higemoto, W 2008, 'Cu spin dynamics in the overdoped regime of La2-x Srx Cu1-y Zny O4 probed by muon spin relaxation', Physical Review B - Condensed Matter and Materials Physics, vol. 77, no. 5, 054516. https://doi.org/10.1103/PhysRevB.77.054516
Risdiana ; Adachi, T. ; Oki, N. ; Yairi, S. ; Tanabe, Y. ; Omori, K. ; Koike, Y. ; Suzuki, Takao ; Watanabe, I. ; Koda, A. ; Higemoto, W. / Cu spin dynamics in the overdoped regime of La2-x Srx Cu1-y Zny O4 probed by muon spin relaxation. In: Physical Review B - Condensed Matter and Materials Physics. 2008 ; Vol. 77, No. 5.
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AU - Risdiana,

AU - Adachi, T.

AU - Oki, N.

AU - Yairi, S.

AU - Tanabe, Y.

AU - Omori, K.

AU - Koike, Y.

AU - Suzuki, Takao

AU - Watanabe, I.

AU - Koda, A.

AU - Higemoto, W.

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