Disappearance of superconductivity in overdoped La2-xSrxCuO4 at a structural phase boundary

H. Takagi, R. J. Cava, M. Marezio, B. Batlogg, J. J. Krajewski, W. F. Peck, P. Bordet, D. E. Cox

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Abstract

The electronic and structural phase diagram of heavily doped La2-xSrxCuO4 (0.15x0.3) is reexamined. We demonstrate that the disappearance of superconductivity in overdoped La2-xSrxCuO4 is associated with an orthorhombic to tetragonal structural phase transition near x=0.2, implying a relationship between superconductivity and subtle structural change. The bulk superconducting phase is thus confined to a much narrower composition range than believed. A complete solid solution of La and Sr is observed in the composition range investigated.

Original languageEnglish (US)
Pages (from-to)3777-3780
Number of pages4
JournalPhysical review letters
Volume68
Issue number25
DOIs
StatePublished - 1992
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Takagi, H., Cava, R. J., Marezio, M., Batlogg, B., Krajewski, J. J., Peck, W. F., Bordet, P., & Cox, D. E. (1992). Disappearance of superconductivity in overdoped La2-xSrxCuO4 at a structural phase boundary. Physical review letters, 68(25), 3777-3780. https://doi.org/10.1103/PhysRevLett.68.3777