Comparative ARPES studies of LaOxF1-xBiS2 (x = 0.23 and 0.46)

K. Terashima; T. Wakita; M. Sunagawa; H. Fujiwara; T. Nagayama; K. Ono; H. Kumigashira; M. Nagao; S. Watauchi; I. Tanaka; H. Okazaki; Y. Takano; Y. Mizuguchi; H. Usui; K. Kuroki; Y. Muraoka; T. Yokoya

doi:10.1088/1742-6596/683/1/012002

Comparative ARPES studies of LaO_xF_1-xBiS₂ (x = 0.23 and 0.46)

K. Terashima, T. Wakita, M. Sunagawa, H. Fujiwara, T. Nagayama, K. Ono, H. Kumigashira, M. Nagao, S. Watauchi, I. Tanaka, H. Okazaki, Y. Takano, Y. Mizuguchi, H. Usui, K. Kuroki, Y. Muraoka, T. Yokoya

研究成果: Conference article › 査読

3 被引用数 (Scopus)

抄録

BiS₂-based layered superconductors are new superconductors, having been paid special attention due to the layered crystal structure and the characteristic electronic structure that can lead to exotic mechanism of superconductivity as well as cooperation of superconductivity and ordered phases. In this article, we report valence band dispersions and Fermi surface topology of LaO_1-xF_xBiS₂ (x = 0.23, T_c < 2 K) studied by angle-resolved photoemission spectroscopy, and compared them with those of LaO_1-xF_xBiS₂ (x = 0.46, T_c = 3.1 K). We discuss experimental x dependent electronic structures and its relation to T_c. We also point to anomalous spectroscopic features in LaO_1-xF_xBiS₂ (x = 0.46) that can be explained by band structure calculations considering distorted lattice, suggesting role of dynamical or static lattice distortion to the physical properties.

本文言語	English
論文番号	012002
ジャーナル	Journal of Physics: Conference Series
巻	683
号	1
DOI	https://doi.org/10.1088/1742-6596/683/1/012002
出版ステータス	Published - 2016 2月 5
イベント	TMU International Symposium on New Quantum Phases Emerging from Novel Crystal Structure - Tokyo, Japan 継続期間: 2015 9月 24 → 2015 9月 25

ASJC Scopus subject areas

物理学および天文学（全般）

文献へのアクセス

10.1088/1742-6596/683/1/012002

他のファイルとリンク

引用スタイル

Terashima, K., Wakita, T., Sunagawa, M., Fujiwara, H., Nagayama, T., Ono, K., Kumigashira, H., Nagao, M., Watauchi, S., Tanaka, I., Okazaki, H., Takano, Y., Mizuguchi, Y., Usui, H., Kuroki, K., Muraoka, Y., & Yokoya, T. (2016). Comparative ARPES studies of LaO_xF_1-xBiS₂ (x = 0.23 and 0.46). Journal of Physics: Conference Series, 683(1), [012002]. https://doi.org/10.1088/1742-6596/683/1/012002

Terashima, K, Wakita, T, Sunagawa, M, Fujiwara, H, Nagayama, T, Ono, K, Kumigashira, H, Nagao, M, Watauchi, S, Tanaka, I, Okazaki, H, Takano, Y, Mizuguchi, Y, Usui, H, Kuroki, K, Muraoka, Y & Yokoya, T 2016, 'Comparative ARPES studies of LaO_xF_1-xBiS₂ (x = 0.23 and 0.46)', Journal of Physics: Conference Series, vol. 683, no. 1, 012002. https://doi.org/10.1088/1742-6596/683/1/012002

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title = "Comparative ARPES studies of LaOxF1-xBiS2 (x = 0.23 and 0.46)",

abstract = "BiS2-based layered superconductors are new superconductors, having been paid special attention due to the layered crystal structure and the characteristic electronic structure that can lead to exotic mechanism of superconductivity as well as cooperation of superconductivity and ordered phases. In this article, we report valence band dispersions and Fermi surface topology of LaO1-xFxBiS2 (x = 0.23, Tc < 2 K) studied by angle-resolved photoemission spectroscopy, and compared them with those of LaO1-xFxBiS2 (x = 0.46, Tc = 3.1 K). We discuss experimental x dependent electronic structures and its relation to Tc. We also point to anomalous spectroscopic features in LaO1-xFxBiS2 (x = 0.46) that can be explained by band structure calculations considering distorted lattice, suggesting role of dynamical or static lattice distortion to the physical properties.",

author = "K. Terashima and T. Wakita and M. Sunagawa and H. Fujiwara and T. Nagayama and K. Ono and H. Kumigashira and M. Nagao and S. Watauchi and I. Tanaka and H. Okazaki and Y. Takano and Y. Mizuguchi and H. Usui and K. Kuroki and Y. Muraoka and T. Yokoya",

note = "Funding Information: This work was partially supported by JSPS KAKENHI Grant Numbers 25800205 and 15H03691. This work was also partially supported by the Program for Promoting the Enhancement of Research Universities from MEXT. Publisher Copyright: {\textcopyright} Published under licence by IOP Publishing Ltd.; TMU International Symposium on New Quantum Phases Emerging from Novel Crystal Structure ; Conference date: 24-09-2015 Through 25-09-2015",

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T1 - Comparative ARPES studies of LaOxF1-xBiS2 (x = 0.23 and 0.46)

AU - Terashima, K.

AU - Wakita, T.

AU - Sunagawa, M.

AU - Fujiwara, H.

AU - Nagayama, T.

AU - Ono, K.

AU - Kumigashira, H.

AU - Nagao, M.

AU - Watauchi, S.

AU - Tanaka, I.

AU - Okazaki, H.

AU - Takano, Y.

AU - Mizuguchi, Y.

AU - Usui, H.

AU - Kuroki, K.

AU - Muraoka, Y.

AU - Yokoya, T.

N1 - Funding Information: This work was partially supported by JSPS KAKENHI Grant Numbers 25800205 and 15H03691. This work was also partially supported by the Program for Promoting the Enhancement of Research Universities from MEXT. Publisher Copyright: © Published under licence by IOP Publishing Ltd.

PY - 2016/2/5

Y1 - 2016/2/5

N2 - BiS2-based layered superconductors are new superconductors, having been paid special attention due to the layered crystal structure and the characteristic electronic structure that can lead to exotic mechanism of superconductivity as well as cooperation of superconductivity and ordered phases. In this article, we report valence band dispersions and Fermi surface topology of LaO1-xFxBiS2 (x = 0.23, Tc < 2 K) studied by angle-resolved photoemission spectroscopy, and compared them with those of LaO1-xFxBiS2 (x = 0.46, Tc = 3.1 K). We discuss experimental x dependent electronic structures and its relation to Tc. We also point to anomalous spectroscopic features in LaO1-xFxBiS2 (x = 0.46) that can be explained by band structure calculations considering distorted lattice, suggesting role of dynamical or static lattice distortion to the physical properties.

AB - BiS2-based layered superconductors are new superconductors, having been paid special attention due to the layered crystal structure and the characteristic electronic structure that can lead to exotic mechanism of superconductivity as well as cooperation of superconductivity and ordered phases. In this article, we report valence band dispersions and Fermi surface topology of LaO1-xFxBiS2 (x = 0.23, Tc < 2 K) studied by angle-resolved photoemission spectroscopy, and compared them with those of LaO1-xFxBiS2 (x = 0.46, Tc = 3.1 K). We discuss experimental x dependent electronic structures and its relation to Tc. We also point to anomalous spectroscopic features in LaO1-xFxBiS2 (x = 0.46) that can be explained by band structure calculations considering distorted lattice, suggesting role of dynamical or static lattice distortion to the physical properties.

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