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Phys. Rev. Lett. 77, 5421 - 5424 (1996)

Muon Spin Relaxation Studies of Zn-Substitution Effects in High- Tc Cuprate Superconductors

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B. Nachumi, A. Keren, K. Kojima, M. Larkin, G. M. Luke, J. Merrin, O. Tchernyshöv, and Y. J. Uemura
Physics Department, Columbia University, New York, New York 10027

N. Ichikawa, M. Goto, and S. Uchida
Department of Superconductivity, University of Tokyo, Bunkyo-ku, Tokyo 113, Japan

Received 12 September 1996

We have performed transverse-field muon spin relaxation measurements of the Zn-substituted cuprate high- Tc superconductors: La2-xSrx(Cu1-yZny)O4 and YBa2(Cu1-yZny)3O6.63. The superconducting carrier density/effective mass ns/m* ratio at T→0 decreases with increasing Zn concentration, in a manner consistent with our “swiss cheese” model in which charge carriers within an area πξab2 around each Zn are excluded from the superfluid. We discuss this result in the context of Bose condensation, pair localization, and pair breaking.


©1996 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevLett.77.5421
DOI: 10.1103/PhysRevLett.77.5421
PACS: 74.62.Dh, 76.75.+i

See Also

Comment: C. Bernhard, J. L. Tallon, C. Bucci, R. DeRenzi, G. Guidi, G. V. Williams, and Ch. Niedermayer, Comment on “Muon Spin Relaxation Studies of Zn-Substitution Effects in High- Tc Cuprate Superconductors”, Phys. Rev. Lett. 80, 205 (1998)

Reply: B. Nachumi,, A. Keren, K. H. Kojima, M. Larkin, G. M. Luke, J. Merrin, O. Techernyshöv, Y. J. Uemura, N. Ichikawa, M. Goto, and S. Uchida, Nachumi et al. Reply:, Phys. Rev. Lett. 80, 206 (1998)

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