Publication

Room-Temperature Ba(Fe1− x Cox )2 As2 Is Not Tetragonal: Direct Observation of Magnetoelastic Interactions in Pnictide Superconductors

Publication Type

Journal

Journal Name

Adv. Mater

Publication Date

January, 2015

Volume

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Abstract

Lattice distortions corresponding to Ba displacements with respect to the FeAs sublattice are revealed to break the room-temperature tetragonal symmetry in Ba(Fe_1−xCo_x)₂As_2. The displacements yield twin domains of the size of ≈10 nm. The domain size correlates with the magnitude of the local Fe magnetic moment and its non-monotonic dependence on Co concentration.

Room-Temperature Ba(Fe1− x Cox )2 As2 Is Not Tetragonal: Direct Observation of Magnetoelastic Interactions in Pnictide Superconductors

Abstract

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