Fermi surfaces and orbital polarization in superconducting CeO0.5 F0.5BiS2 revealed by angle-resolved photoemission spectroscopy

T. Sugimoto; D. Ootsuki; C. Morice; E. Artacho; S. S. Saxena; E. F. Schwier; M. Zheng; Y. Kojima; H. Iwasawa; K. Shimada; M. Arita; H. Namatame; M. Taniguchi; M. Takahashi; N. L. Saini; T. Asano; R. Higashinaka; T. D. Matsuda; Y. Aoki; T. Mizokawa

doi:10.1103/PhysRevB.92.041113

Fermi surfaces and orbital polarization in superconducting CeO0.5 F0.5BiS2 revealed by angle-resolved photoemission spectroscopy

T. Sugimoto, D. Ootsuki, C. Morice, E. Artacho, S. S. Saxena, E. F. Schwier, M. Zheng, Y. Kojima, H. Iwasawa, K. Shimada, M. Arita, H. Namatame, M. Taniguchi, M. Takahashi, N. L. Saini, T. Asano, R. Higashinaka, T. D. Matsuda, Y. Aoki, T. Mizokawa

先進理工学部

研究成果: Article › 査読

34 被引用数 (Scopus)

抄録

We have investigated the electronic structure of BiS2-based CeO0.5F0.5BiS2 superconductor using polarization-dependent angle-resolved photoemission spectroscopy (ARPES), and succeeded in elucidating the orbital characters on the Fermi surfaces. In the rectangular Fermi pockets around the X point, the straight portion parallel to the ky direction is dominated by Bi 6px character. The orbital polarization indicates the underlying quasi-one-dimensional electronic structure of the BiS2 system. Moreover, distortions on tetragonally aligned Bi could give rise to the band Jahn-Teller effect.

本文言語	English
論文番号	041113
ジャーナル	Physical Review B - Condensed Matter and Materials Physics
巻	92
号	4
DOI	https://doi.org/10.1103/PhysRevB.92.041113
出版ステータス	Published - 2015 7月 16

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

文献へのアクセス

10.1103/PhysRevB.92.041113

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引用スタイル

Sugimoto, T., Ootsuki, D., Morice, C., Artacho, E., Saxena, S. S., Schwier, E. F., Zheng, M., Kojima, Y., Iwasawa, H., Shimada, K., Arita, M., Namatame, H., Taniguchi, M., Takahashi, M., Saini, N. L., Asano, T., Higashinaka, R., Matsuda, T. D., Aoki, Y., & Mizokawa, T. (2015). Fermi surfaces and orbital polarization in superconducting CeO0.5 F0.5BiS2 revealed by angle-resolved photoemission spectroscopy. Physical Review B - Condensed Matter and Materials Physics, 92(4), Article 041113. https://doi.org/10.1103/PhysRevB.92.041113

Sugimoto, T, Ootsuki, D, Morice, C, Artacho, E, Saxena, SS, Schwier, EF, Zheng, M, Kojima, Y, Iwasawa, H, Shimada, K, Arita, M, Namatame, H, Taniguchi, M, Takahashi, M, Saini, NL, Asano, T, Higashinaka, R, Matsuda, TD, Aoki, Y & Mizokawa, T 2015, 'Fermi surfaces and orbital polarization in superconducting CeO0.5 F0.5BiS2 revealed by angle-resolved photoemission spectroscopy', Physical Review B - Condensed Matter and Materials Physics, vol. 92, no. 4, 041113. https://doi.org/10.1103/PhysRevB.92.041113

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title = "Fermi surfaces and orbital polarization in superconducting CeO0.5 F0.5BiS2 revealed by angle-resolved photoemission spectroscopy",

abstract = "We have investigated the electronic structure of BiS2-based CeO0.5F0.5BiS2 superconductor using polarization-dependent angle-resolved photoemission spectroscopy (ARPES), and succeeded in elucidating the orbital characters on the Fermi surfaces. In the rectangular Fermi pockets around the X point, the straight portion parallel to the ky direction is dominated by Bi 6px character. The orbital polarization indicates the underlying quasi-one-dimensional electronic structure of the BiS2 system. Moreover, distortions on tetragonally aligned Bi could give rise to the band Jahn-Teller effect.",

author = "T. Sugimoto and D. Ootsuki and C. Morice and E. Artacho and Saxena, {S. S.} and Schwier, {E. F.} and M. Zheng and Y. Kojima and H. Iwasawa and K. Shimada and M. Arita and H. Namatame and M. Taniguchi and M. Takahashi and Saini, {N. L.} and T. Asano and R. Higashinaka and Matsuda, {T. D.} and Y. Aoki and T. Mizokawa",

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AU - Ootsuki, D.

AU - Morice, C.

AU - Artacho, E.

AU - Saxena, S. S.

AU - Schwier, E. F.

AU - Zheng, M.

AU - Kojima, Y.

AU - Iwasawa, H.

AU - Shimada, K.

AU - Arita, M.

AU - Namatame, H.

AU - Taniguchi, M.

AU - Takahashi, M.

AU - Saini, N. L.

AU - Asano, T.

AU - Higashinaka, R.

AU - Matsuda, T. D.

AU - Aoki, Y.

AU - Mizokawa, T.

PY - 2015/7/16

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AB - We have investigated the electronic structure of BiS2-based CeO0.5F0.5BiS2 superconductor using polarization-dependent angle-resolved photoemission spectroscopy (ARPES), and succeeded in elucidating the orbital characters on the Fermi surfaces. In the rectangular Fermi pockets around the X point, the straight portion parallel to the ky direction is dominated by Bi 6px character. The orbital polarization indicates the underlying quasi-one-dimensional electronic structure of the BiS2 system. Moreover, distortions on tetragonally aligned Bi could give rise to the band Jahn-Teller effect.

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