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 language | English (US) |
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Pages (from-to) | 3777-3780 |
Number of pages | 4 |
Journal | Physical review letters |
Volume | 68 |
Issue number | 25 |
DOIs | |
State | Published - 1992 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy