Specific heat and angle-resolved photoemission spectroscopy study of the superconducting gaps in LiFeAs

U. Stockert; M. Abdel-Hafiez; D. V. Evtushinsky; V. B. Zabolotnyy; A. U. B. Wolter; S. Wurmehl; I. Morozov; R. Klingeler; S. V. Borisenko; B. Buechner

doi:10.1103/PhysRevB.83.224512

Back

Specific heat and angle-resolved photoemission spectroscopy study of the superconducting gaps in LiFeAs

Journal article

Peer reviewed

Specific heat and angle-resolved photoemission spectroscopy study of the superconducting gaps in LiFeAs

U. Stockert, M. Abdel-Hafiez, D. V. Evtushinsky, V. B. Zabolotnyy, A. U. B. Wolter, S. Wurmehl, I. Morozov, R. Klingeler, S. V. Borisenko and B. Buechner

Physical review. B, Vol.83(22)

27/06/2011

DOI: https://doi.org/10.1103/PhysRevB.83.224512

Abstract

Materials Science

Materials Science, Multidisciplinary

Physical Sciences

Physics

Physics, Applied

Physics, Condensed Matter

Science & Technology

Technology

We present specific-heat, c(p), and angle-resolved photoemission spectroscopy (ARPES) data on single crystals of the stoichiometric superconductor LiFeAs. A pronounced anomaly is found in c(p) at the superconducting transition. The electronic contribution can be described by two s-type energy gaps with magnitudes of approximately Delta(1) = 1.2 meV and Delta(2) = 2.6 meV and a normal-state gamma coefficient of 10 mJ/mol K-2. All these values are in agreement with ARPES results.

Metrics

1 Record Views

Details

Title: Specific heat and angle-resolved photoemission spectroscopy study of the superconducting gaps in LiFeAs
Creators - without role: U. Stockert - Leibniz Institute for Solid State and Materials Research
M. Abdel-Hafiez - Leibniz Institute for Solid State and Materials Research
D. V. Evtushinsky - Leibniz Institute for Solid State and Materials Research
V. B. Zabolotnyy - Leibniz Institute for Solid State and Materials Research
A. U. B. Wolter - IFW Dresden, Inst Solid State Res, DE-01171 Dresden, Germany
S. Wurmehl - Leibniz Institute for Solid State and Materials Research
I. Morozov - Lomonosov Moscow State University
R. Klingeler - Kirchhoff
S. V. Borisenko - Leibniz Institute for Solid State and Materials Research
B. Buechner - IFW Dresden, Inst Solid State Res, DE-01171 Dresden, Germany
Publication Details: Physical review. B, Vol.83(22)
Publisher: Amer Physical Soc
Number of pages: 5
Grant note: 10-03-91334 / RFBR-DFG; German Research Foundation (DFG); Russian Foundation for Basic Research (RFBR) SPP1458; BE1749/13 / Deutsche Forschungsgemeinschaft; German Research Foundation (DFG) P-279 / Ministry of Science and Education of the Russian Federation; Ministry of Education and Science, Russian Federation
Identifiers: 9929621508331
Academic Unit: Taibah University
Language: English
Resource Type: Journal article