Abstract
We report on the electronic structure of the 111-type iron pnictide superconductor LiFeAs as a function of temperature using angle-resolved photoemission spectroscopy. Below approximately 50 K, both the hole band at the point and the electron band at the point shift to a higher binding energy side. However, at the high-symmetry points , and , the remaining bands are almost independent of temperature. One of the possible scenarios for these observations is that a strong, three-dimensional orbital-dependent correlation exists in the normal state of LiFeAs in relation to short-range spin fluctuations.
- Received 12 February 2015
- Revised 4 September 2015
DOI:https://doi.org/10.1103/PhysRevB.93.024503
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