Skip to main content

Observation of metallic surface states in the strongly correlated Kitaev-Heisenberg candidate

Author(s): Alidoust, Nasser; Liu, Chang; Xu, Su-Yang; Belopolski, Ilya; Qi, Tongfei; et al

To refer to this page use:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorAlidoust, Nasser-
dc.contributor.authorLiu, Chang-
dc.contributor.authorXu, Su-Yang-
dc.contributor.authorBelopolski, Ilya-
dc.contributor.authorQi, Tongfei-
dc.contributor.authorZeng, Minggang-
dc.contributor.authorSanchez, Daniel S.-
dc.contributor.authorZheng, Hao-
dc.contributor.authorBian, Guang-
dc.contributor.authorNeupane, Madhab-
dc.contributor.authorLiu, Yu-Tzu-
dc.contributor.authorWilson, Stephen D.-
dc.contributor.authorLin, Hsin-
dc.contributor.authorBansil, Arun-
dc.contributor.authorCao, Gang-
dc.contributor.authorHasan, M. Zahid-
dc.identifier.citationAlidoust, Nasser, Liu, Chang, Xu, Su-Yang, Belopolski, Ilya, Qi, Tongfei, Zeng, Minggang, Sanchez, Daniel S, Zheng, Hao, Bian, Guang, Neupane, Madhab, Liu, Yu-Tzu, Wilson, Stephen D, Lin, Hsin, Bansil, Arun, Cao, Gang, Hasan, M Zahid. (2016). Observation of metallic surface states in the strongly correlated Kitaev-Heisenberg candidate. Physical Review B, 93 (24), 10.1103/PhysRevB.93.245132en_US
dc.description.abstractWe report high-resolution angle-resolved photoemission spectroscopy measurements on the honeycomb iridate Na2IrO3. Our measurements reveal the existence of a metallic surface band feature crossing the Fermi level with nearly linear dispersion and an estimated surface carrier density of 3.2 × 1013 cm−2 , which has not been theoretically predicted or experimentally observed, and provides the first evidence for metallic behavior on the boundary of this material, whereas the bulk bands exhibit a robust insulating gap. We further show the lack of theoretically predicted Dirac cones at the M points of the surface Brillouin zone, which confirms the absence of a stacked quantum spin Hall phase in this material. Our data indicates that the surface ground state of this material is exotic and metallic, unlike as predicted in theory, and establishes Na2IrO3 as a rare example of a strongly correlated spin-orbit insulator with surface metallicity.en_US
dc.format.extent1 - 16en_US
dc.relation.ispartofPhysical Review Ben_US
dc.rightsAuthor's manuscripten_US
dc.titleObservation of metallic surface states in the strongly correlated Kitaev-Heisenberg candidateen_US
dc.typeJournal Articleen_US

Files in This Item:
File Description SizeFormat 
1410.6389v1.pdf4.48 MBAdobe PDFView/Download

Items in OAR@Princeton are protected by copyright, with all rights reserved, unless otherwise indicated.