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

先進理工学部

研究成果: Article › 査読

2 被引用数 (Scopus)

抄録

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.

本文言語	English
論文番号	205138
ジャーナル	Physical Review B
巻	98
号	20
DOI	https://doi.org/10.1103/PhysRevB.98.205138
出版ステータス	Published - 2018 11月 19

ASJC Scopus subject areas

電子材料、光学材料、および磁性材料
凝縮系物理学

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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.",

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day = "19",

doi = "10.1103/PhysRevB.98.205138",

language = "English",

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journal = "Physical Review B-Condensed Matter",

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

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