Gossamer high-temperature bulk superconductivity in FeSe

Using the anisotropic electron transport and susceptibility measurements we demonstrate the appearance of inhomogeneous gossamer superconductivity in FeSe single crystals at ambient pressure and at temperature five times higher than its zero resistance Tc. We also find and quantitatively describe a...

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Bibliographic Details
Published in:Physical review. B 2017-04, Vol.95 (16), p.165120, Article 165120
Main Authors: Sinchenko, A. A., Grigoriev, P. D., Orlov, A. P., Frolov, A. V., Shakin, A., Chareev, D. A., Volkova, O. S., Vasiliev, A. N.
Format: Article
Language:English
Subjects:
Anisotropy
Conduction
Conductors
Crystals
Electron transport
Pressure
Single crystals
Superconductivity
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Summary:Using the anisotropic electron transport and susceptibility measurements we demonstrate the appearance of inhomogeneous gossamer superconductivity in FeSe single crystals at ambient pressure and at temperature five times higher than its zero resistance Tc. We also find and quantitatively describe 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 tool to study inhomogeneous superconductivity in various anisotropic compounds, which helps to investigate the onset of high-temperature superconductivity.
ISSN:2469-9950
2469-9969
DOI:10.1103/PhysRevB.95.165120