Anisotropic quasiparticle scattering rates in slightly underdoped to optimally doped high-temperature La2−xSrxCuO4 superconductors
J. Chang, M. Shi, S. Pailhés, M. Månsson, T. Claesson, O. Tjernberg, A. Bendounan, Y. Sassa, L. Patthey, N. Momono, M. Oda, M. Ido, S. Guerrero, C. Mudry, J. Mesot
DOI 10.1103/PhysRevB.78.205103 · Physical Review B
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Abstract
An angle-resolved photoemission study of the scattering rate in the superconducting phase of the high-temperature superconductor La2−xSrxCuO4 with x=0.145 and x=0.17, as a function of binding energy and momentum, is presented. We observe that the scattering rate scales linearly with binding energy up to the high-energy scale E1∼0.4 eV. The scattering rate is found to be strongly anisotropic, with a minimum along the (0,0)–(π,π) direction. A possible connection to a quantum-critical point is discussed.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 36 | Pressure not reported | unknown |
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