Quasi-two-dimensional behavior of 112-type iron-based superconductors

Quasi-two-dimensional behavior of 112-type iron-based superconductors Fluctuation magnetoconductivity and magnetization above the superconducting transition temperature (Tc) are measured on the recently discovered 112 family of iron-based superconductors (IBS), Ca1−xLaxFe1−yNiyAs2, which presents an extra As-As chain spacer-layer. The analysis in terms of a generalization of the Lawrence-Doniach approach to finite applied magnetic fields indicates that these compounds are among the most anisotropic IBS (γ up to ∼30) and provides compelling evidence of a quasi-two-dimensional behavior for doping levels near the optimal one. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Quasi-two-dimensional behavior of 112-type iron-based superconductors

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Quasi-two-dimensional behavior of 112-type iron-based superconductors

Abstract

Fluctuation magnetoconductivity and magnetization above the superconducting transition temperature (Tc) are measured on the recently discovered 112 family of iron-based superconductors (IBS), Ca1−xLaxFe1−yNiyAs2, which presents an extra As-As chain spacer-layer. The analysis in terms of a generalization of the Lawrence-Doniach approach to finite applied magnetic fields indicates that these compounds are among the most anisotropic IBS (γ up to ∼30) and provides compelling evidence of a quasi-two-dimensional behavior for doping levels near the optimal one.
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Publisher
The American Physical Society
Copyright
Copyright © ©2017 American Physical Society
ISSN
1098-0121
eISSN
1550-235X
D.O.I.
10.1103/PhysRevB.96.014516
Publisher site
See Article on Publisher Site

Abstract

Fluctuation magnetoconductivity and magnetization above the superconducting transition temperature (Tc) are measured on the recently discovered 112 family of iron-based superconductors (IBS), Ca1−xLaxFe1−yNiyAs2, which presents an extra As-As chain spacer-layer. The analysis in terms of a generalization of the Lawrence-Doniach approach to finite applied magnetic fields indicates that these compounds are among the most anisotropic IBS (γ up to ∼30) and provides compelling evidence of a quasi-two-dimensional behavior for doping levels near the optimal one.

Journal

Physical Review BAmerican Physical Society (APS)

Published: Jul 24, 2017

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