Observation of multiple superconducting gaps in Fe₁+yTe₁-xSex via a nanoscale approach to point-contact spectroscopy.
نویسندگان
چکیده
We report a novel experimental approach to point-contact Andreev reflection spectroscopy with diagnostic capability via a unique design for nanoscale normal metal/superconductor devices with excellent thermomechanical stability, and have employed this method to unveil the existence of two superconducting energy gaps in iron chalcogenide Fe(1+y)Te(1-x)Se(x), which is crucial for understanding its pairing mechanism. This work opens up new opportunities to study gap structures in superconductors and elemental excitations in solids.
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ورودعنوان ژورنال:
- Journal of physics. Condensed matter : an Institute of Physics journal
دوره 24 45 شماره
صفحات -
تاریخ انتشار 2012