Cryomagnetic Scanning Tunneling Spectroscopy of Superconducting FeSe$_{1-x}$Te$_{x}$ Single Crystals
ORAL
Abstract
We report cryomagnetic scanning tunneling spectroscopy measurements on single crystals of the iron-based superconducting compound FeSe$_{1-x}$Te$_{x}$. Atomically-resolved conductance spectra are observed down to 300 mK and up to 5 Tesla. A gap structure is seen against a linear spectral background, showing non-trivial spatial variation, temperature dependence and field evolution. We discuss our data in relation to possible doping inhomogeneities and other recent spectroscopic measurements on iron-based superconductors.
*Work supported by NSERC, CFI/OIT, OCE, the Canadian Institute for Advanced Research and the Taiwan National Science Council.
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