Orbital-dependent band renormalization in WT e2 revealed by angle-resolved photoemission spectroscopy

R. Matsumoto, T. Sugimoto, Takashi Mizokawa, N. L. Saini, M. Arita, R. Jha, R. Higashinaka, T. D. Matsuda, Y. Aoki

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    Abstract

    The effect of electronic correlation on WTe2 has been investigated by means of angle-resolved photoemission spectroscopy (ARPES) and band-structure calculation. In the ARPES results, the valence band top with Te 5p character reaches the Fermi level and forms complicated hole pockets around the zone center. In addition, two electron pockets are observed besides the hole pockets. The position of the electron pockets is inconsistent with the prediction of band calculation, suggesting the importance of electronic correlation in WTe2. The present analysis indicates the correlation effect is associated with the excitonic coupling between the W 5d electron and Te 5p hole bands.

    Original languageEnglish
    Article number205138
    JournalPhysical Review B
    Volume98
    Issue number20
    DOIs
    Publication statusPublished - 2018 Nov 19

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    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

    Cite this

    Matsumoto, R., Sugimoto, T., Mizokawa, T., Saini, N. L., Arita, M., Jha, R., Higashinaka, R., Matsuda, T. D., & Aoki, Y. (2018). Orbital-dependent band renormalization in WT e2 revealed by angle-resolved photoemission spectroscopy. Physical Review B, 98(20), [205138]. https://doi.org/10.1103/PhysRevB.98.205138