Spin-Phonon Coupling and Superconductivity in Fe Pnictides

Details Spin-Phonon Coupling and Superconductivity in Fe Pnictides Spin-Phonon Coupling and Superconductivity in Fe Pnictides

2009-07-16

arxiv.org/abs/0907.2734v1

Physics

Condensed Matter

Superconductivity

Scientific paper

We propose a theory of strong spin-lattice and spin-phonon coupling in iron pnictides and discuss its implications on superconductivity. Strong magneto-volume effect in iron compounds has long been known as the Invar effect. Fe pnictides also exhibit this effect, reflected in particular to the atomic volume of Fe defined by the nearest neighbor atoms. Through the phenomenological Landau theory, developed on the basis of the calculations by the density functional theory (DFT) and the experimental results, we quantify the strength of the spin-lattice interaction as it relates to the Stoner criterion for the onset of magnetism. We suggest that the coupling between electrons and phonons through the spin channel may be sufficiently strong to be an important part of the superconductivity mechanism in Fe pnictides.

Affiliated with

Also associated with

No associations

Rating

Spin-Phonon Coupling and Superconductivity in Fe Pnictides does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Spin-Phonon Coupling and Superconductivity in Fe Pnictides, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spin-Phonon Coupling and Superconductivity in Fe Pnictides will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-620999