Quasi-two-dimensional behavior of 112-type iron-based superconductors
| Autor: | Huiqian Luo, Shiliang Li, Carlos Carballeira, J. J. Ponte, D. Sóñora, Tao Xie, Jesús Mosqueira |
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| Rok vydání: | 2017 |
| Předmět: |
Physics
Superconductivity Condensed matter physics Doping 02 engineering and technology Type (model theory) 021001 nanoscience & nanotechnology 01 natural sciences Magnetic field Magnetization Chain (algebraic topology) Iron based Condensed Matter::Superconductivity 0103 physical sciences 010306 general physics 0210 nano-technology Anisotropy |
| Zdroj: | Physical Review B. 96 |
| ISSN: | 2469-9969 2469-9950 |
| DOI: | 10.1103/physrevb.96.014516 |
| Popis: | Fluctuation magnetoconductivity and magnetization above the superconducting transition temperature (${T}_{c}$) are measured on the recently discovered 112 family of iron-based superconductors (IBS), ${\mathrm{Ca}}_{1\ensuremath{-}x}{\mathrm{La}}_{x}{\mathrm{Fe}}_{1\ensuremath{-}y}{\mathrm{Ni}}_{y}{\mathrm{As}}_{2}$, 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 ($\ensuremath{\gamma}$ up to $\ensuremath{\sim}30$) and provides compelling evidence of a quasi-two-dimensional behavior for doping levels near the optimal one. |
| Databáze: | OpenAIRE |
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