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Revealing the single electron pocket of FeSe in a single orthorhombic domain

Rhodes, Luke C.; Watson, Matthew D.; Haghighirad, Amir A.; Evtushinsky, D. V.; Kim, Timur K.

Abstract (englisch):
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.

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Verlagsausgabe §
DOI: 10.5445/IR/1000120118
Veröffentlicht am 12.06.2020
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Quantenmaterialien und -technologien (IQMT)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 08.06.2020
Sprache Englisch
Identifikator ISSN: 2469-9950, 2469-9969
KITopen-ID: 1000120118
HGF-Programm 43.21.01 (POF III, LK 01)
Quantum Correlations in Condensed Matter
Erschienen in Physical review / B
Band 101
Heft 23
Seiten Article no: 235128
Vorab online veröffentlicht am 05.06.2020
Nachgewiesen in Scopus
Web of Science
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