Manifestation of vibronic dynamics in infrared spectra of Mott insulating fullerides

Yuki Matsuda, Naoya Iwahara, Katsumi Tanigaki, Liviu F. Chibotaru

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The fine structure and temperature evolution of infrared spectra have been intensively used to probe the nature of Jahn-Teller dynamics in correlated materials. At the same time, a theoretical framework to adequately extract the information on the complicated vibronic dynamics from infrared spectra is still lacking. In this work, the first-principles theory of the infrared spectra of dynamical Jahn-Teller system is developed and applied to the Mott-insulating Cs3C60. With the calculated coupling parameters for Jahn-Teller and infrared active vibrational modes, the manifestation of the dynamical Jahn-Teller effect in infrared spectra is elucidated. In particular, the temperature evolution of the infrared line shape is explained. The transformation of the latter into Fano resonance type in metallic fulleride is discussed on the basis of obtained results.

Original languageEnglish
Article number165410
JournalPhysical Review B
Volume98
Issue number16
DOIs
Publication statusPublished - 2018 Oct 5

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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