Absence of Y-pocket in 1-Fe Brillouin zone and reversed orbital occupation imbalance in FeSe

Cited 9 time in webofscience Cited 0 time in scopus
  • Hit : 132
  • Download : 11
The FeSe nematic phase has been the focus of recent research on iron-based superconductors (IBSs) due to its unusual properties, which are distinct from those of the pnic-tides. A series of theoretical/experimental studies were performed to determine the origin of the nematic phase. However, they yielded conflicting results and caused additional controversies. Here, we report the results of angle-resolved photoemission and X-ray absorption spectroscopy studies on FeSe detwinned by a piezo stack. We fully resolved band dispersions with orbital characters near the Brillouin zone (BZ) corner, and revealed an absence of any Fermi pocket at the Y point in the 1-Fe BZ. In addition, the occupation imbalance between dxz and dyz orbitals was the opposite of that of iron pnictides, consistent with the identified band characters. These results resolve issues associated with the FeSe nematic phase and shed light on the origin of the nematic phase in IBSs.
Publisher
NATURE PUBLISHING GROUP
Issue Date
2020-03
Language
English
Article Type
Article
Citation

COMMUNICATIONS PHYSICS, v.3, no.1

ISSN
2399-3650
DOI
10.1038/s42005-020-0319-1
URI
http://hdl.handle.net/10203/273889
Appears in Collection
PH-Journal Papers(저널논문)
Files in This Item
000520977200001.pdf(996.04 kB)Download
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 9 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0