Matches in SemOpenAlex for { <https://semopenalex.org/work/W2051175738> ?p ?o ?g. }
- W2051175738 abstract "We demonstrate an interrelation between the magnetic properties and optical conductivity $ensuremath{sigma}(ensuremath{omega})$ for $3d$ electron systems with active orbital degree of freedom at a transition-metal ion: ${t}_{2g}$ in ${d}^{1}$ and ${e}_{g}$ in ${d}^{7}$ configuration. Both systems are described within the two-band Hubbard model which we analyze using exact-diagonalization technique for a two-site molecule at quarter filling. We highlight the main features of the low-temperature optical conductivity spectra for ${e}_{g}$ and ${t}_{2g}$ electrons, in the presence of the crystal-field splitting and show that these spectra provide a way to determine both Hund's exchange ${J}_{H}$ and intraorbital Coulomb interaction $U$. The orbital polarization and the entanglement between spin and orbital degrees of freedom are also discussed, together with possible violations of the Goodenough-Kanamori rules." @default.
- W2051175738 created "2016-06-24" @default.
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- W2051175738 date "2010-11-18" @default.
- W2051175738 modified "2023-10-18" @default.
- W2051175738 title "Optical conductivity in the vicinity of a quantum critical point" @default.
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- W2051175738 doi "https://doi.org/10.1103/physrevb.82.195125" @default.
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