Abstract:
The optical absorption in ferromagnetic metal La1-xSrxMnO3 is anomalous; it has a wide-range absorption up to about 1 eV even at zero temperature. Since 3d electrons in La1-xSrxMnO3 partially fill doubly degenerate eg orbitals, the orbital degrees of freedom are crucial to understand this metallic system. We argue that the interband transition within eg orbitals is important in the optical absorption. The optical spectrum is modified also by the inter-orbital Coulomb interaction. We have examined perturbatively the effect of the Coulomb interaction on the spectrum. Available experiments are discussed by comparing with the present results.
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
Received: 13 February 1998 / Accepted: 17 March 1998
Rights and permissions
About this article
Cite this article
Takahashi, A., Shiba, H. Orbital degrees of freedom and electron correlation in optical absorption of metallic LaSrMnO . Eur. Phys. J. B 5, 413–417 (1998). https://doi.org/10.1007/s100510050461
Issue Date:
DOI: https://doi.org/10.1007/s100510050461