Phase separation in the iron chalcogenide superconductor Fe1+yTexSe1−x

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Authors

Hefei Hu · University of Illinois Urbana-Champaign

Jian‐Min Zuo · University of Illinois Urbana-Champaign

Jinsheng Wen · Brookhaven National Laboratory

Zhijun Xu · Brookhaven National Laboratory

Zhiwei Lin · Brookhaven National Laboratory

Qiang Li · Brookhaven National Laboratory

Genda Gu

Abstract

We report investigation on Fe1+yTexSe1-x single crystals by using scanning transmission electron microscopy (STEM) and electron energy loss spectroscopy (EELS). Both nonsuperconducting samples with excess iron and superconducting samples demonstrate nanoscale phase separation and chemical inhomogeneity of Te/Se content, which we attribute to a miscibility gap. The line scan EELS technique indicates ~20% or less fluctuation of Te concentration from the nominal compositions.

Topics & Keywords

Iron-based superconductors research Corporate Taxation and Avoidance Corporate Finance and Governance

UN Sustainable Development Goals

Affordable and clean energy

Publication Details

Published in: New Journal of Physics

Volume 13, Issue 5, pp. 053031-053031

DOI: 10.1088/1367-2630/13/5/053031

Field-Weighted Citation Impact: 1.77

Command Palette

Phase separation in the iron chalcogenide superconductor Fe<sub>1+<i>y</i></sub>Te<sub><i>x</i></sub>Se<sub>1−<i>x</i></sub>

Authors

Abstract

Topics & Keywords

UN Sustainable Development Goals

Publication Details