In-gap quasiparticle excitations induced by non-magnetic Cu impurities in Na(Fe0.96Co0.03Cu0.01)As revealed by scanning tunnelling spectroscopy
The origin of superconductivity in the iron pnictides remains unclear. One suggestion is that superconductivity in these materials has a magnetic origin, which would imply a sign-reversal s± pairing symmetry. Another suggests it is the result of orbital fluctuations, which would imply a sign-equal s...
| Main Authors: | , , , , , , , |
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| Format: | Online |
| Language: | English |
| Published: |
Nature Pub. Group
2013
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| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3868228/ |