Elastic softening in superconducting La2−xSrxCuO4
Tae Song Kwon, Jong Chul Park, Kyun Nahm, Hyun Sik Noh, Chul Koo Kim
DOI 10.1103/PhysRevB.49.4388 · Physical Review B
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Abstract
A theoretical model for the elastic softening observed in La2−xSrxCuO4 is presented. It is shown that the electronic redistribution mechanisms between the strain-split itinerant p bands and also between the strain-shifted energy pockets can satisfactorily account for the elastic softening of c66 and (c11-c12)/2. The result suggests that the Fermi level shifts from the M point to the Γ point as a consequence of the tetragonal-to-orthorhombic structural transition. Implications of the present result on the superconducting mechanism are discussed.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La1.86Sr0.14CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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