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Phys. Rev. Lett. 95, 157001 (2005) [4 pages]

Muon Spin Relaxation Studies of Magnetic-Field-Induced Effects in High-Tc Superconductors

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A. T. Savici1, A. Fukaya1, I. M. Gat-Malureanu1, T. Ito1, P. L. Russo1, Y. J. Uemura1,*, C. R. Wiebe1,2, P. P. Kyriakou2, G. J. MacDougall2, M. T. Rovers2, G. M. Luke2, K. M. Kojima3, M. Goto3, S. Uchida3, R. Kadono4, K. Yamada5, S. Tajima6, T. Masui6, H. Eisaki7, N. Kaneko7, M. Greven7, and G. D. Gu8
1Department of Physics, Columbia University, New York, New York 10027, USA
2Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, Canada
3Department Physics, University of Tokyo, Tokyo 113-8656, Japan
4Institute of Materials Structure Science, KEK, Tsukuba, Japan
5Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
6ISTEC, Shinonome 1-10-13, Koto-Ku, Tokyo 135-0062, Japan
7Department of Applied Physics, Stanford University, Stanford, California 94305, USA
8Brookhaven National Laboratory, Upton, New York 11973, USA

Received 4 July 2004; revised 30 March 2005; published 4 October 2005

Muon spin relaxation measurements in high transverse magnetic fields (∥ĉ) revealed strong field-induced quasistatic magnetism in the underdoped and Eu-doped (La,Sr)2CuO4 and La1.875Ba0.125CuO4, existing well above Tc and TN. The susceptibility counterpart of Cu spin polarization, derived from the muon spin relaxation rate, exhibits a divergent behavior towards T∼25  K. No field-induced magnetism was detected in overdoped La1.81Sr0.19CuO4, optimally doped Bi2212, and Zn-doped YBa2Cu3O7.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.95.157001
DOI:
10.1103/PhysRevLett.95.157001
PACS:
74.25.Ha, 74.72.Dn, 76.75.+i

*To whom all correspondence should be addressed.

 
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