Low-energy interband transitions in YBa2Cu3O7

I. I. Mazin, S. N. Rashkeev, A. I. Liechtenstein, O. K. Andersen

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Based on a numerically highly accurate local-density-approximation (LDA) calculation, we present a kp analysis of the interband optical absorption in YBa2Cu3O7 in the infrared region (Latin small letter h with strokeω<0.1 eV). It is shown that the LDA band structure gives rise to three infrared interband transitions: A sharp peak for the in-plane (Ec) polarization at about 320 cm-1, a wide maximum for Ec at about 420 cm-1, and a structureless absorption (ε2const) for Ec. The first feature is due to transitions between the apical-oxygen-derived bands, the second one to that between the z-even and z-odd CuO2 plane bands, and the third one to the transitions between the chain band and the z-odd plane band. The possibility of observing these features in experiment is discussed.

Original languageEnglish
Pages (from-to)11232-11235
Number of pages4
JournalPhysical Review B
Issue number17
Publication statusPublished - 1 Jan 1992

ASJC Scopus subject areas

  • Condensed Matter Physics

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    Mazin, I. I., Rashkeev, S. N., Liechtenstein, A. I., & Andersen, O. K. (1992). Low-energy interband transitions in YBa2Cu3O7. Physical Review B, 46(17), 11232-11235. https://doi.org/10.1103/PhysRevB.46.11232