Raman Study of High Tc Superconductors (La1-xSrx)2CuO4
- 1 April 1987
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 26 (4A), L495
- https://doi.org/10.1143/jjap.26.l495
Abstract
Lattice vibrations in high T c superconductors (La1-x Sr x )2CuO4 are investigated by Raman scattering using single crystals. In La2CuO4 the 664 and 153 cm-1 peaks are resonantly enhanced at low temperatures. The enhancement is caused by the electronic transition spanning the quasi-square Fermi surface to the nesting directions. The 664 cm-1 mode is assigned to the planar breathing mode which strongly interacts with electrons at the Fermi level and the 796 cm-1 mode in (La0.925Sr0.075)2CuO4 is tentatively assigned to the axial breathing mode.Keywords
This publication has 13 references indexed in Scilit:
- High-pressure study of the new Y-Ba-Cu-O superconducting compound systemPhysical Review Letters, 1987
- Dimerization model for the metal-semiconductor transition inPhysical Review B, 1987
- High-Tc Superconductivity of La-Ba-Cu Oxides. II. –Specification of the Superconducting PhaseJapanese Journal of Applied Physics, 1987
- High-Tc Superconductivity of La-Ba-Cu Oxides. III –Electrical Resistivity MeasurementJapanese Journal of Applied Physics, 1987
- Bulk superconductivity at 36 K inPhysical Review Letters, 1987
- Evidence for superconductivity above 40 K in the La-Ba-Cu-O compound systemPhysical Review Letters, 1987
- High TcSuperconductivity of La-Ba-Cu OxidesJapanese Journal of Applied Physics, 1987
- Possible highT c superconductivity in the Ba?La?Cu?O systemZeitschrift für Physik B Condensed Matter, 1986
- Lattice Vibrations in the Charge‐Density‐Wave States of Layered Transition Metal DichalcogenidesPhysica Status Solidi (b), 1985
- Über Oxocuprate. XV Zur Kristallstruktur von Seltenerdmetalloxocupraten: La2CuO4, Gd2CuO4Zeitschrift für anorganische und allgemeine Chemie, 1977