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Electronic Raman scattering from La0.7Sr0.3MnO3 exhibiting giant magnetoresistance

Gupta, R and Sood, AK and Mahesh, R and Rao, CNR (1996) Electronic Raman scattering from La0.7Sr0.3MnO3 exhibiting giant magnetoresistance. In: Phys. Rev. B, 54 (21). pp. 14899-14902.


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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.

Item Type: Journal Article
Publication: Phys. Rev. B
Publisher: The American Physical Society
Additional Information: Copyright for this article belongs to American Physical Society (APS)
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Division of Physical & Mathematical Sciences > Physics
Date Deposited: 26 Jul 2004
Last Modified: 19 Sep 2010 04:14
URI: http://eprints.iisc.ac.in/id/eprint/1178

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