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J. H. Brewer(University of British Columbia), E. J. Ansaldo(TRIUMF), J. F. Carolan(Brookhaven National Laboratory), A.C.D. Chaklader(University of Saskatchewan), W. N. Hardy(University of Saskatchewan), Dale R. Harshman(The University of Tokyo), M. E. Hayden(Brookhaven National Laboratory), Masayasu Ishikawa(Tokyo Institute of Technology), N. Kaplan(University of British Columbia), R. Keitel(Hebrew University of Jerusalem), J. R. Kempton(University of Saskatchewan), R. F. Kiefl(University of British Columbia), W. J. Kossler(Virginia State University), S. R. Kreitzman(The University of Tokyo), A. Kulpa(Brookhaven National Laboratory), Y. Kuno(University of Saskatchewan), G. M. Luke(Virginia State University), H. Miyatake(The University of Tokyo), K. Nagamine(Tokyo Institute of Technology), Yasuhiro Nakazawa(The University of Tokyo), N. Nishida(TRIUMF), K. Nishiyama(The University of Tokyo), S. Ohkuma(University of British Columbia), T. M. Riseman(Virginia State University), G. Roehmer(Brookhaven National Laboratory), P. Schleger(TRIUMF), Daisuke Shimada(University of British Columbia), C. E. Stronach(William & Mary), T. Takabatake(Virginia State University), Y. J. Uemura(TRIUMF), Yutaka Watanabe(University of Saskatchewan), D. Ll. Williams(University of Saskatchewan), Tsutomu Yamazaki(Virginia State University), Bingxin Yang(William & Mary)
Physical Review Letters
March 14, 1988
Cited by 236

Abstract

Positive-muon spin-rotation and -relaxation measurements of the oxygen-deficient perovskite ${\mathrm{YBa}}_{2}$${\mathrm{Cu}}_{3}$${\mathrm{O}}_{\mathrm{x}}$ have revealed local antiferromagnetic order for 6.0\ensuremath{\lesssim}x\ensuremath{\lesssim}6.4 with a N\'eel temperature ${T}_{\mathrm{N}}$ that decreases rapidly with increasing oxygen content x. For slowly annealed samples with 6.35\ensuremath{\lesssim}x\ensuremath{\lesssim}6.5 the superconducting transition temperature ${T}_{c}$ increases smoothly with x from 25 K at x=6.348 to 60 K at x=6.507. Two such samples with x=6.348 and x=6.400 appear to ``switch'' from superconductivity to antiferromagnetic order at lower temperatures.


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