Spin dependent electron-phonon interaction in SmFeAsO by low-temperature Raman spectroscopy

Abstract

The interplay between spin dynamics and lattice vibration has been suggested as an important part of the puzzle of high-temperature superconductivity. Here we report the strong interaction between spin fluctuation and phonon in SmFeAsO, a parent compound of the iron arsenide family of superconductors, revealed by low-temperature Raman spectroscopy. Anomalous zone-boundary-phonon Raman scattering from spin superstructure was observed at temperatures below the antiferromagnetic ordering point, which offers compelling evidence on spin dependent electron-phonon coupling in pnictides.

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Cited by in corpus (10)

• Distinct spin-lattice and spin-phonon interactions in monolayer magnetic CrI${}_3$
• Pseudogap formation above the superconducting dome in iron-pnictides
• Magnetic interactions in iron superconductors: A review
• Coupling of the A_{1g} As-phonon to magnetism in iron pnictides
• Copper doping effects on the superconducting properties of Sm-based oxypnictides
• Nonlinear and time-resolved optical study of the 112-type iron-based superconductor parent Ca${}_{1-x}$La${}_x$FeAs${}_2$ across its structural phase transition
• Non-linear lattice response of SmFeAsO_{1-x}F_{x} superconductor to hydrostatic pressure
• High-pressure growth effects on the superconducting properties of Sm-based oxypnictide superconductors
• Tuning Superconductivity by Isovalent Antimony Substitution in PrFeAs(O,F)
• Fluorine-substitution-dependent phase diagram and superconducting properties of Sm-based oxypnictides synthesized by a high-pressure growth technique