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Article overview
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Gossamer bulk high-temperature superconductivity in FeSe | A.A. Sinchenko
; P.D. Grigoriev
; A.P. Orlov
; A.V. Frolov
; A. Shakin
; D.A. Chareev
; O.S. Volkova
; A.N. Vasiliev
; | Date: |
19 Oct 2016 | Abstract: | The cuprates and iron-based high-temperature superconductors share many
common features: layered strongly anisotropic crystal structure, strong
electronic correlations, interplay between different types of electronic
ordering, the intrinsic spatial inhomogeneity due to doping. The understanding
of complex interplay between these factors is crucial for a directed search of
new high-temperature superconductors. Here we show the appearance of
inhomogeneous gossamer superconductivity in bulk FeSe compound at ambient
pressure and at temperature 5 times higher than its zero-resistance $T_c$. This
discovery helps to understand numerous remarkable superconducting properties of
FeSe. We also find and prove a general property: if inhomogeneous
superconductivity in a anisotropic conductor first appears in the form of
isolated superconducting islands, it reduces electric resistivity
anisotropically with maximal effect along the least conducting axis. This gives
a simple and very general tool to detect inhomogeneous superconductivity in
anisotropic compounds, which is critically important to study the onset of
high-temperature superconductivity. | Source: | arXiv, 1610.6117 | Services: | Forum | Review | PDF | Favorites |
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