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

School of Advanced Science and Engineering

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

33 Citations (Scopus)

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.

Original language	English
Article number	041113
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	92
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevB.92.041113
Publication status	Published - 2015 Jul 16

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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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), [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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doi = "10.1103/PhysRevB.92.041113",

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AU - Sugimoto, T.

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

Y1 - 2015/7/16

N2 - 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.

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

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