Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/102310
Title: Estimation of Intraband and Interband Relative Coupling Constants from Temperature Dependences of the Order Parameter for Two-Gap Superconductors
Authors: Kuzmichev, S. A.
Kuzmicheva, T. E.
Tchesnokov, S. N.
Pudalov, V. M.
Vasiliev, A. N.
Issue Date: 2016
Publisher: Springer New York LLC
Citation: Estimation of Intraband and Interband Relative Coupling Constants from Temperature Dependences of the Order Parameter for Two-Gap Superconductors / S. A. Kuzmichev, T. E. Kuzmicheva, S. N. Tchesnokov, et al. — DOI 10.1007/s10948-016-3386-5 // Journal of Superconductivity and Novel Magnetism. — 2016. — Vol. 29. — Iss. 4. — P. 1111-1116.
Abstract: We present temperature dependences of the large and the small superconducting gaps measured directly by SnS-Andreev spectroscopy in various Fe-based superconductors and MgB2. The experimental ΔL, S(T) are well-fitted with a two-gap model based on Moskalenko and Suhl system of equations (supplemented with a BCS-integral renormalization). From the fitting procedure, we estimate the key attribute of superconducting state — relative electron-boson coupling constants and eigen BCS-ratios for both condensates. Our results evidence for a driving role of a strong intraband coupling in the bands with the large gap, whereas interband coupling is rather weak for all the superconductors under study. © 2016, Springer Science+Business Media New York.
Keywords: ANDREEV SPECTROSCOPY
HIGH-TEMPERATURE SUPERCONDUCTORS
IRON PNICTIDES
MARE SPECTROSCOPY
MGB2
TWO-GAP SUPERCONDUCTIVITY
HIGH TEMPERATURE SUPERCONDUCTORS
IV-VI SEMICONDUCTORS
LAYERED SEMICONDUCTORS
MAGNESIUM COMPOUNDS
SINGLE CRYSTALS
TEMPERATURE DISTRIBUTION
TIN COMPOUNDS
IRON PNICTIDES
MGB2
RELATIVE COUPLING CONSTANT
SUPERCONDUCTING GAPS
SUPERCONDUCTING STATE
TEMPERATURE DEPENDENCE
TWO-GAP SUPERCONDUCTIVITY
TWO-GAP SUPERCONDUCTOR
IRON-BASED SUPERCONDUCTORS
URI: http://hdl.handle.net/10995/102310
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 84954479531
PURE ID: 736028
ISSN: 15571939
DOI: 10.1007/s10948-016-3386-5
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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