Universität zu Köln

Kushnirenko, Y. S., Kordyuk, A. A., Fedorov, A. V., Haubold, E., Wolf, T., Buechner, B. and Borisenko, S. V. (2017). Anomalous temperature evolution of the electronic structure of FeSe. Phys. Rev. B, 96 (10). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

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Abstract

We present angle-resolved photoemission spectroscopy data taken from the structurally simplest representative of iron-based superconductors, FeSe, in a wide temperature range. Apart from the variations related to the nematic transition, we detect very pronounced shifts of the dispersions on the scale of hundreds of degrees Kelvin. Remarkably, upon warming up the sample, the band structure has a tendency to relax to the one predicted by conventional band structure calculations, directly opposite to what is intuitively expected. Our findings shed light on the origin of the dominant interaction shaping the electronic states responsible for high-temperature superconductivity in iron-based materials.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Kushnirenko, Y. S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kordyuk, A. A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Fedorov, A. V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Haubold, E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wolf, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Buechner, B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Borisenko, S. V. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-217672
DOI:	10.1103/PhysRevB.96.100504
Journal or Publication Title:	Phys. Rev. B
Volume:	96
Number:	10
Date:	2017
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	2469-9969
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SUPERCONDUCTIVITY Multiple languages Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/21767