Strong electron-phonon coupling of the Fe breathing mode of LaO_1-xF_xFeAs

2008/04/01 by H. Eschrig, Helmut Eschrig, Eschrig, Helmut · 3 citations
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Iron-based superconductors research #Magnetic and transport properties of perovskites and related materials #Superconductivity (cond-mat.supr-con) #cond-mat.supr-con

paper · pdf · doi:10.48550/arxiv.0804.0186

4 pages, 8figures, submitted to PRL (This manuscript replaces an earlier version which, unfortunately, contained an erroneous passage.)

openalex publication_date 2008/04/01 · arxiv created 2008/04/11 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The electron-phonon coupling of LaO_1-xF_xFeAs is re-investigated on the basis of density functional theory in local density approximation. The implications of the (π,π) nesting of the Fermi surfaces are carefully studied and found to lead to a non-standard electron-phonon coupling of the corresponding Fe in-plane breathing mode, which might make a strong contribution to the high superconducting transition temperature. The semi-metallic behavior of the undoped material is also further illuminated.

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