Spectromicroscopy of electronic phase separation in KxFe2−ySe2 superconductor

Structural phase separation in A x Fe 2− y Se 2 system has been studied by different experimental techniques, however, it should be important to know how the electronic uniformity is influenced, on which length scale the electronic phases coexist and what is their spatial distribution. Here, we have...

Full description

Saved in:
Bibliographic Details
Published in:Scientific reports 2014-07, Vol.4 (1), p.5592-5592, Article 5592
Main Authors: Bendele, M., Barinov, A., Joseph, B., Innocenti, D., Iadecola, A., Bianconi, A., Takeya, H., Mizuguchi, Y., Takano, Y., Noji, T., Hatakeda, T., Koike, Y., Horio, M., Fujimori, A., Ootsuki, D., Mizokawa, T., Saini, N. L.
Format: Article
Language:English
Subjects:
639/301/119/995
639/766/119/1003
Energy
Humanities and Social Sciences
Materials science
multidisciplinary
Physics
Scanning
Science
Spatial distribution
Spectrum analysis
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Structural phase separation in A x Fe 2− y Se 2 system has been studied by different experimental techniques, however, it should be important to know how the electronic uniformity is influenced, on which length scale the electronic phases coexist and what is their spatial distribution. Here, we have used novel scanning photoelectron microscopy (SPEM) to study the electronic phase separation in K x Fe 2− y Se 2 , providing a direct measurement of the topological spatial distribution of the different electronic phases. The SPEM results reveal a peculiar interconnected conducting filamentary phase that is embedded in the insulating texture. The filamentary structure with a particular topological geometry could be important for the high T c superconductivity in the presence of a phase with a large magnetic moment in A x Fe 2− y Se 2 materials.
ISSN:2045-2322
2045-2322
DOI:10.1038/srep05592