期刊
NEW JOURNAL OF PHYSICS
卷 11, 期 -, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/11/2/025015
关键词
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资金
- EPSRC [EP/C528506/1, EP/G048584/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/C528506/1, EP/G048584/1] Funding Source: researchfish
Bulk samples of TbFeAsO0.9F0.1 (T-c(on) = 50 K) were measured by point contact Andreev reflection spectroscopy. The spectra show unambiguous evidence for multiple gap-like features plus the presence of high-bias shoulders. By measuring the spectra as a function of temperature with both gold and superconducting niobium tips, we establish that the gap-like features are associated with the superconducting order parameter in this material. We discuss whether the well-defined zero-bias conductance peak that we observe infrequently is associated with a nodal superconducting order parameter.
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