Magnetoelastic Effects in Iron Telluride

Details Magnetoelastic Effects in Iron Telluride Magnetoelastic Effects in Iron Telluride

2010-11-08

arxiv.org/abs/1011.1932v2

Phys. Rev. B 83, 115109 (2011)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 2 figures

Scientific paper

Iron telluride doped lightly with selenium is known to undergo a first order magneto-structural transition before turning superconducting at higher doping. We study the effects of magneto-elastic couplings on this transition using symmetry considerations. We find that the magnetic order parameters are coupled to the uniform monoclinic strain of the unit cell with one iron per cell, as well as to the phonons at high symmetry points of the Brillouin zone. In the magnetic phase the former gives rise to monoclinic distortion while the latter induces dimerization of the ferromagnetic iron chains due to alternate lengthening and shortening of the nearest-neighbour iron-iron bonds. We compare this system with the iron arsenides and propose a microscopic magneto-elastic Hamiltonian which is relevant for all the iron based superconductors. We argue that this describes electron-lattice coupling in a system where electron-electron interaction is crucial.

Affiliated with

Also associated with

No associations

Rating

Magnetoelastic Effects in Iron Telluride 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 Magnetoelastic Effects in Iron Telluride, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetoelastic Effects in Iron Telluride will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-492149