期刊论文详细信息
Electronic Raman scattering from La0.7Sr0.3MnO3 exhibiting giant magnetoresistance | |
Article | |
关键词: CARRIER-DENSITY FLUCTUATIONS; DOUBLE-EXCHANGE; LA1-XSRXMNO3; RESISTIVITY; INTERVALLEY; MN; | |
DOI : 10.1103/PhysRevB.54.14899 | |
来源: SCIE |
【 摘 要 】
Raman scattering experiments on metallic La0.7Sr0.3MnO3 have been carried out using different excitation wavelengths as a function of temperature from 15 K to 300 K. Our data suggest a Raman mode attributed to electronic excitations centered at 2100 cm(-1) whose intensity decreases with increasing temperature. if the Raman mode is attributed to single-particle excitation associated with the fluctuations of the mass tensor, the decreased intensity would then imply a reduction in the density of states at the Fermi energy with increasing temperature.
【 授权许可】
Free