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

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

doi:10.1103/PhysRevB.98.205138

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

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

School of Advanced Science and Engineering

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

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 language	English
Article number	205138
Journal	Physical Review B
Volume	98
Issue number	20
DOIs	https://doi.org/10.1103/PhysRevB.98.205138
Publication status	Published - 2018 Nov 19

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.98.205138

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title = "Orbital-dependent band renormalization in WT e2 revealed by angle-resolved photoemission spectroscopy",

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.",

author = "R. Matsumoto and T. Sugimoto and T. Mizokawa and Saini, {N. L.} and M. Arita and R. Jha and R. Higashinaka and Matsuda, {T. D.} and Y. Aoki",

note = "Funding Information: This work was financially supported by JSPS KAKENHI (Grants No. JP15H03693, No. JP15H05884, No. JP16F16028, and No. JP16K05454) and by CREST-JST (Grant No. JPMJCR15Q2). The synchrotron radiation experiment was performed with the approval of HiSOR (16AG044). Publisher Copyright: {\textcopyright} 2018 American Physical Society.",

year = "2018",

month = nov,

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doi = "10.1103/PhysRevB.98.205138",

language = "English",

volume = "98",

journal = "Physical Review B",

issn = "2469-9950",

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T1 - Orbital-dependent band renormalization in WT e2 revealed by angle-resolved photoemission spectroscopy

AU - Matsumoto, R.

AU - Sugimoto, T.

AU - Mizokawa, T.

AU - Saini, N. L.

AU - Arita, M.

AU - Jha, R.

AU - Higashinaka, R.

AU - Matsuda, T. D.

AU - Aoki, Y.

N1 - Funding Information: This work was financially supported by JSPS KAKENHI (Grants No. JP15H03693, No. JP15H05884, No. JP16F16028, and No. JP16K05454) and by CREST-JST (Grant No. JPMJCR15Q2). The synchrotron radiation experiment was performed with the approval of HiSOR (16AG044). Publisher Copyright: © 2018 American Physical Society.

PY - 2018/11/19

Y1 - 2018/11/19

N2 - 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.

AB - 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.

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ER -

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

Abstract

ASJC Scopus subject areas

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