Effect of uniaxial pressure on the magneto-structural transitions of iron arsenide superconductors

Details Effect of uniaxial pressure on the magneto-structural transitions of iron arsenide superconductors Effect of uniaxial pressure on the magneto-structural transitions of iron arsenide superconductors

2012-01-26

arxiv.org/abs/1201.5594v1

Physics

Condensed Matter

Strongly Correlated Electrons

3 pages, 2 figures

Scientific paper

We study theoretically the variation of the magnetic and the structural transition temperatures of the iron arsenide superconductors with external uniaxial stress. We show that the increase of the transition temperatures reported in recent experiments is compatible with a simple magneto-elastic model in which the physical origin of this variation is linked to the fact that antiferromagnetic bonds are longer than the ferromagnetic ones in the magnetic phase. We make predictions which can be verified in order to test the relevance of this model.

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