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Critical Properties in Photoemmision Spectra for One Dimensional Orbitally Degenerate Mott Insulator

T. Fujii·Y. Tsukamoto·N. Kawakami
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Abstract

Critical properties in photoemission spectra for the one-dimensional Mott insulator with orbital degeneracy are studied by exploiting the integrable {\it t-J} model, which is a supersymmetric generalization of the SU($n$) degenerate spin model. We discuss the critical properties for the holon dispersion as well as the spinon dispersions, by applying the conformal field theory analysis to the exact finite-size energy spectrum. We study the effect of orbital-splitting on the spectra by evaluating the momentum-dependent critical exponents.

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T. Fujii, Y. Tsukamoto, N. Kawakami. 1998-11-13. Critical Properties in Photoemmision Spectra for One Dimensional Orbitally Degenerate Mott Insulator. https://doi.org/10.1143/jpsj.68.151

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