Spectromicroscopy of electronic phase separation in KxFe2-ySe2 superconductor.
Spectromicroscopy of electronic phase separation in KxFe2-ySe2 superconductor.
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DOI:
10.1038/srep05592
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发表时间:
2014-07-07
影响因子:
4.6
通讯作者:
Saini NL
中科院分区:
文献类型:
--
作者:
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 NL
Structural phase separation in AxFe2−ySe2 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 KxFe2−ySe2, 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 Tc superconductivity in the presence of a phase with a large magnetic moment in AxFe2−ySe2 materials.
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影响因子:
3.7
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通讯作者:
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