Revealing the single electron pocket of FeSe in a single orthorhombic domain
Date
08/06/2020Metadata
Show full item recordAbstract
We measure the electronic structure of FeSe from within individual orthorhombic domains. Enabled by an angle-resolved photoemission spectroscopy beamline with a highly focused beam spot (nano-ARPES), we identify clear stripelike orthorhombic domains in FeSe with a length scale of approximately 1-5 μm. Our photoemission measurements of the Fermi surface and band structure within individual domains reveal a single electron pocket at the Brillouin zone corner. This result provides clear evidence for a one-electron-pocket electronic structure of FeSe, observed without the application of uniaxial strain, and calls for further theoretical insight into this unusual Fermi surface topology. Our results also showcase the potential of nano-ARPES for the study of correlated materials with local domain structures.
Citation
Rhodes , L C , Watson , M D , Haghighirad , A A , Evtushinsky , D V & Kim , T K 2020 , ' Revealing the single electron pocket of FeSe in a single orthorhombic domain ' , Physical Review B , vol. 101 , no. 23 , 235128 . https://doi.org/10.1103/PhysRevB.101.235128
Publication
Physical Review B
Status
Peer reviewed
ISSN
2469-9950Type
Journal article
Description
Authors acknowledge Diamond Light Source for time on beamline I05-ARPES under Proposal SI23890. L.C.R. acknowledges funding from the Royal Commission for the Exhibition of 1851.Collections
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.