Control of Tetrahedral Coordination and Superconductivity inFeSe0.5Te0.5Thin Films

2010/02/13 by Sunxiang Huang, S. X. Huang, C. L. Chien +3 · 2 citations
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paper · pdf · doi:10.1103/physrevlett.104.217002

published as Phys. Rev. Lett. 104, 217002 (2010)

arxiv created 2010/02/13 · openalex publication_date 2010/05/25 · arxiv updated 2010/05/27 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We demonstrate a close relationship between superconductivity and the dimensions of the Fe-Se(Te) tetrahedron in FeSe0.5Te0.5. This is done by exploiting thin film epitaxy, which provides controlled biaxial stress, both compressive and tensile, to distort the tetrahedron. The Se/Te height within the tetrahedron is found to be of crucial importance to superconductivity, in agreement with the scenario that (π, π) spin fluctuations promote superconductivity in Fe superconductors.

Citations

• First-order magnetic and structural phase transitions inFe1+ySexTe1−x
• A BCS-like gap in the superconductor SmFeAsO0.85F0.15
• Multiband magnetism and superconductivity in Fe-based compounds
• Substitution Effects on FeSe Superconductor

Cited by

• Magnetic surface reconstruction in the van der Waals antiferromagnet Fe1+xTe
• Chemical composition control at the substrate interface as the key for FeSe thin film growth