Fermi Arcs vs. Fermi Pockets in Electron-doped Perovskite Iridates

We report on an angle resolved photoemission (ARPES) study of bulk electron-doped perovskite iridate, (Sr(1−x)La(x))(3)Ir(2)O(7). Fermi surface pockets are observed with a total electron count in keeping with that expected from La substitution. Depending on the energy and polarization of the inciden...

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Detalles Bibliográficos
Autores principales: He, Junfeng, Hafiz, H., Mion, Thomas R., Hogan, T., Dhital, C., Chen, X., Lin, Qisen, Hashimoto, M., Lu, D. H., Zhang, Y., Markiewicz, R. S., Bansil, A., Wilson, S. D., He, Rui-Hua
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4336940/
https://www.ncbi.nlm.nih.gov/pubmed/25704850
http://dx.doi.org/10.1038/srep08533
Descripción
Sumario:We report on an angle resolved photoemission (ARPES) study of bulk electron-doped perovskite iridate, (Sr(1−x)La(x))(3)Ir(2)O(7). Fermi surface pockets are observed with a total electron count in keeping with that expected from La substitution. Depending on the energy and polarization of the incident photons, these pockets show up in the form of disconnected “Fermi arcs”, reminiscent of those reported recently in surface electron-doped Sr(2)IrO(4). Our observed spectral variation is consistent with the coexistence of an electronic supermodulation with structural distortion in the system.

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