Magnetic correlations and superconductivity in La1.93 Sr0.07 CuO4 revealed by μSR

K. Ishida; W. Higemoto; K. Ohishi; A. Koda; K. H. Satoh; R. Kadono; M. Fujita; K. Yamada

doi:10.1016/j.jmmm.2006.10.096

Magnetic correlations and superconductivity in La_1.93 Sr_0.07 CuO₄ revealed by μSR

K. Ishida, W. Higemoto, K. Ohishi, A. Koda, K. H. Satoh, R. Kadono, M. Fujita, K. Yamada

Materials Property Division

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

We have performed transverse field muon spin rotation experiments on a single-crystal La_1.93Sr_0.07CuO₄, which is close to the critical value x = 0.06, in the field range from 1 to 60 kOe in order to investigate the relation between magnetism and superconductivity in an underdoped high-T_c superconductor. The measured sample shows evidence of static magnetism at T_g ∼ 4 K, far below the superconducting transition temperature T_c = 17 K. We measured the shift and the linewidth of the fast-Fourier transform (FFT) spectra obtained in a high field of 60 kOe, both of which are dominated by Cu - 3 d spins. The temperature dependences of the shift and the linewidth indicate the development of modulated staggered correlations below 100 K. We conclude that the static staggered correlations coexist with superconductivity far below T_c.

Original language	English
Pages (from-to)	526-528
Number of pages	3
Journal	Journal of Magnetism and Magnetic Materials
Volume	310
Issue number	2 SUPPL. PART 1
DOIs	https://doi.org/10.1016/j.jmmm.2006.10.096
Publication status	Published - 2007 Mar

Keywords

Cobalt oxide
NQR
Spin fluctuations
Superconductivity

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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@article{56d0eddf380242a59ae4c34a72d5d234,

title = "Magnetic correlations and superconductivity in La1.93 Sr0.07 CuO4 revealed by μSR",

abstract = "We have performed transverse field muon spin rotation experiments on a single-crystal La1.93Sr0.07CuO4, which is close to the critical value x = 0.06, in the field range from 1 to 60 kOe in order to investigate the relation between magnetism and superconductivity in an underdoped high-Tc superconductor. The measured sample shows evidence of static magnetism at Tg ∼ 4 K, far below the superconducting transition temperature Tc = 17 K. We measured the shift and the linewidth of the fast-Fourier transform (FFT) spectra obtained in a high field of 60 kOe, both of which are dominated by Cu - 3 d spins. The temperature dependences of the shift and the linewidth indicate the development of modulated staggered correlations below 100 K. We conclude that the static staggered correlations coexist with superconductivity far below Tc.",

keywords = "Cobalt oxide, NQR, Spin fluctuations, Superconductivity",

author = "K. Ishida and W. Higemoto and K. Ohishi and A. Koda and Satoh, {K. H.} and R. Kadono and M. Fujita and K. Yamada",

note = "Funding Information: One of the authors (K.I.) is grateful to Y. Kitaoka, Y. Tokunaga, H.Kotegawa, D.E.MacLaughlin and Y.J. Uemura for valuable discussion. This work was partially supported by 21 COE program on “Center for Diversity and Universality in Physics” form MEXT of Japan, and by Grants-in-Aid for Scientific Research from the Japan Society for the Promotion of Science. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.",

year = "2007",

month = mar,

doi = "10.1016/j.jmmm.2006.10.096",

language = "English",

volume = "310",

pages = "526--528",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier",

number = "2 SUPPL. PART 1",

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TY - JOUR

T1 - Magnetic correlations and superconductivity in La1.93 Sr0.07 CuO4 revealed by μSR

AU - Ishida, K.

AU - Higemoto, W.

AU - Ohishi, K.

AU - Koda, A.

AU - Satoh, K. H.

AU - Kadono, R.

AU - Fujita, M.

AU - Yamada, K.

N1 - Funding Information: One of the authors (K.I.) is grateful to Y. Kitaoka, Y. Tokunaga, H.Kotegawa, D.E.MacLaughlin and Y.J. Uemura for valuable discussion. This work was partially supported by 21 COE program on “Center for Diversity and Universality in Physics” form MEXT of Japan, and by Grants-in-Aid for Scientific Research from the Japan Society for the Promotion of Science. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.

PY - 2007/3

Y1 - 2007/3

N2 - We have performed transverse field muon spin rotation experiments on a single-crystal La1.93Sr0.07CuO4, which is close to the critical value x = 0.06, in the field range from 1 to 60 kOe in order to investigate the relation between magnetism and superconductivity in an underdoped high-Tc superconductor. The measured sample shows evidence of static magnetism at Tg ∼ 4 K, far below the superconducting transition temperature Tc = 17 K. We measured the shift and the linewidth of the fast-Fourier transform (FFT) spectra obtained in a high field of 60 kOe, both of which are dominated by Cu - 3 d spins. The temperature dependences of the shift and the linewidth indicate the development of modulated staggered correlations below 100 K. We conclude that the static staggered correlations coexist with superconductivity far below Tc.

AB - We have performed transverse field muon spin rotation experiments on a single-crystal La1.93Sr0.07CuO4, which is close to the critical value x = 0.06, in the field range from 1 to 60 kOe in order to investigate the relation between magnetism and superconductivity in an underdoped high-Tc superconductor. The measured sample shows evidence of static magnetism at Tg ∼ 4 K, far below the superconducting transition temperature Tc = 17 K. We measured the shift and the linewidth of the fast-Fourier transform (FFT) spectra obtained in a high field of 60 kOe, both of which are dominated by Cu - 3 d spins. The temperature dependences of the shift and the linewidth indicate the development of modulated staggered correlations below 100 K. We conclude that the static staggered correlations coexist with superconductivity far below Tc.

KW - Cobalt oxide

KW - NQR

KW - Spin fluctuations

KW - Superconductivity

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