Phase Separation and Superconductivity in Fe1+xTe0.5Se0.5

Vikas Bhatia; Efrain E. Rodriguez; Nicholas P. Butch; Johnpierre Paglione; Mark A. Green

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arXiv · 1106.5955

Phase Separation and Superconductivity in Fe1+xTe0.5Se0.5

Vikas Bhatia·Efrain E. Rodriguez·Nicholas P. Butch·Johnpierre Paglione·Mark A. Green

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Abstract

Fe1+xTe0.5Se0.5 is the archetypical iron-based superconductor. Here we show that the superconducting state is controlled by the stacking of its anti-PbO layers, such that homogeneous ordering hinders superconductivity and the highest volume fractions are observed in phase separated structures as evidenced by either a distribution of lattice parameters or microstrain.

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Vikas Bhatia, Efrain E. Rodriguez, Nicholas P. Butch, Johnpierre Paglione, Mark A. Green. 2011-06-29. Phase Separation and Superconductivity in Fe1+xTe0.5Se0.5. https://arxiv.org/abs/1106.5955

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