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Updated: Jul 18, 2026

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Published on: April 14, 2020
Doping variation of orbitally induced anisotropy in the electronic structure of La1-xSrxVO3
J Fujioka1, S Miyasaka, Y Tokura
1Department of Applied Physics, University of Tokyo, Tokyo 113-8656, Japan.
Abstract:
The variation of anisotropic charge dynamics in the course of a filling-control insulator-metal transition (IMT) in La(1-x)Sr(x)VO3 has been investigated by measurements of optical conductivity spectra with the focus on the role of the t(2g)-orbital degree of freedom. The orbitally induced anisotropic feature of the Mott-gap excitation as well as of the doping-induced midinfrared excitation is suppressed with increasing x, and instead the isotropic and incoherent dynamics of the doped hole dominates over the low-energy excitation near and above the IMT point.
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