Low frequency spectroscopy of the correlated metallic system $Ca_xSr_{1-x}VO_3$
M. J. Rozenberg, I. H. Inoue, H. Makino, F. Iga, Y. Nishihara
TL;DR
This paper investigates the spectral and optical properties of the correlated metal $Ca_xSr_{1-x}VO_3$ using photoemission and optical conductivity measurements, modeled with a Hubbard model near the Mott transition.
Contribution
It provides a detailed comparison between experimental data and theoretical predictions using the LISA method for a strongly correlated system.
Findings
Spectral weight transfer observed in photoemission.
Unusual optical lineshape explained by Hubbard model.
Agreement between experiment and theory within LISA approximation.
Abstract
We study the photoemission and optical conductivity response of the strongly correlated metallic system . We find that the basic features of the transfer of spectral weight in photoemission experiments and the unusual lineshape of the optical response can be understood by modeling the system with a one band Hubbard model close to the Mott-Hubbard transition. We present a detailed comparison between the low frequency experimental data and the corresponding theoretical predictions obtained within the LISA method that is exact in the limit of large lattice connectivity.
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