Metallic phase in stoichiometric CeOBiS 2 revealed by space-resolved ARPES

T. Sugimoto, E. Paris, T. Wakita, K. Terashima, T. Yokoya, A. Barinov, J. Kajitani, R. Higashinaka, T. D. Matsuda, Y. Aoki, Takashi Mizokawa, N. L. Saini

    Research output: Contribution to journalArticle

    10 Citations (Scopus)

    Abstract

    Recently CeOBiS 2 system without any fluorine doping is found to show superconductivity posing question on its origin. Using space resolved ARPES we have found a metallic phase embedded in the morphological defects and at the sample edges of stoichiometric CeOBiS 2 . While bulk of the sample is semiconducting, the embedded metallic phase is characterized by the usual electron pocket at X point, similar to the Fermi surface of doped BiS 2 -based superconductors. Typical size of the observed metallic domain is larger than the superconducting correlation length of the system suggesting that the observed superconductivity in undoped CeOBiS 2 might be due to this embedded metallic phase at the defects. The results also suggest a possible way to develop new systems by manipulation of the defects in these chalcogenides with structural instability.

    Original languageEnglish
    Article number20351
    JournalScientific Reports
    Volume8
    Issue number1
    DOIs
    Publication statusPublished - 2018 Dec 1

    Fingerprint

    defects
    superconductivity
    chalcogenides
    Fermi surfaces
    fluorine
    manipulators
    electrons

    ASJC Scopus subject areas

    • General

    Cite this

    Sugimoto, T., Paris, E., Wakita, T., Terashima, K., Yokoya, T., Barinov, A., ... Saini, N. L. (2018). Metallic phase in stoichiometric CeOBiS 2 revealed by space-resolved ARPES. Scientific Reports, 8(1), [20351]. https://doi.org/10.1038/s41598-018-20351-y

    Metallic phase in stoichiometric CeOBiS 2 revealed by space-resolved ARPES. / Sugimoto, T.; Paris, E.; Wakita, T.; Terashima, K.; Yokoya, T.; Barinov, A.; Kajitani, J.; Higashinaka, R.; Matsuda, T. D.; Aoki, Y.; Mizokawa, Takashi; Saini, N. L.

    In: Scientific Reports, Vol. 8, No. 1, 20351, 01.12.2018.

    Research output: Contribution to journalArticle

    Sugimoto, T, Paris, E, Wakita, T, Terashima, K, Yokoya, T, Barinov, A, Kajitani, J, Higashinaka, R, Matsuda, TD, Aoki, Y, Mizokawa, T & Saini, NL 2018, 'Metallic phase in stoichiometric CeOBiS 2 revealed by space-resolved ARPES', Scientific Reports, vol. 8, no. 1, 20351. https://doi.org/10.1038/s41598-018-20351-y
    Sugimoto T, Paris E, Wakita T, Terashima K, Yokoya T, Barinov A et al. Metallic phase in stoichiometric CeOBiS 2 revealed by space-resolved ARPES. Scientific Reports. 2018 Dec 1;8(1). 20351. https://doi.org/10.1038/s41598-018-20351-y
    Sugimoto, T. ; Paris, E. ; Wakita, T. ; Terashima, K. ; Yokoya, T. ; Barinov, A. ; Kajitani, J. ; Higashinaka, R. ; Matsuda, T. D. ; Aoki, Y. ; Mizokawa, Takashi ; Saini, N. L. / Metallic phase in stoichiometric CeOBiS 2 revealed by space-resolved ARPES. In: Scientific Reports. 2018 ; Vol. 8, No. 1.
    @article{b1a587773a1c433a96974a9675a30ab0,
    title = "Metallic phase in stoichiometric CeOBiS 2 revealed by space-resolved ARPES",
    abstract = "Recently CeOBiS 2 system without any fluorine doping is found to show superconductivity posing question on its origin. Using space resolved ARPES we have found a metallic phase embedded in the morphological defects and at the sample edges of stoichiometric CeOBiS 2 . While bulk of the sample is semiconducting, the embedded metallic phase is characterized by the usual electron pocket at X point, similar to the Fermi surface of doped BiS 2 -based superconductors. Typical size of the observed metallic domain is larger than the superconducting correlation length of the system suggesting that the observed superconductivity in undoped CeOBiS 2 might be due to this embedded metallic phase at the defects. The results also suggest a possible way to develop new systems by manipulation of the defects in these chalcogenides with structural instability.",
    author = "T. Sugimoto and E. Paris and T. Wakita and K. Terashima and T. Yokoya and A. Barinov and J. Kajitani and R. Higashinaka and Matsuda, {T. D.} and Y. Aoki and Takashi Mizokawa and Saini, {N. L.}",
    year = "2018",
    month = "12",
    day = "1",
    doi = "10.1038/s41598-018-20351-y",
    language = "English",
    volume = "8",
    journal = "Scientific Reports",
    issn = "2045-2322",
    publisher = "Nature Publishing Group",
    number = "1",

    }

    TY - JOUR

    T1 - Metallic phase in stoichiometric CeOBiS 2 revealed by space-resolved ARPES

    AU - Sugimoto, T.

    AU - Paris, E.

    AU - Wakita, T.

    AU - Terashima, K.

    AU - Yokoya, T.

    AU - Barinov, A.

    AU - Kajitani, J.

    AU - Higashinaka, R.

    AU - Matsuda, T. D.

    AU - Aoki, Y.

    AU - Mizokawa, Takashi

    AU - Saini, N. L.

    PY - 2018/12/1

    Y1 - 2018/12/1

    N2 - Recently CeOBiS 2 system without any fluorine doping is found to show superconductivity posing question on its origin. Using space resolved ARPES we have found a metallic phase embedded in the morphological defects and at the sample edges of stoichiometric CeOBiS 2 . While bulk of the sample is semiconducting, the embedded metallic phase is characterized by the usual electron pocket at X point, similar to the Fermi surface of doped BiS 2 -based superconductors. Typical size of the observed metallic domain is larger than the superconducting correlation length of the system suggesting that the observed superconductivity in undoped CeOBiS 2 might be due to this embedded metallic phase at the defects. The results also suggest a possible way to develop new systems by manipulation of the defects in these chalcogenides with structural instability.

    AB - Recently CeOBiS 2 system without any fluorine doping is found to show superconductivity posing question on its origin. Using space resolved ARPES we have found a metallic phase embedded in the morphological defects and at the sample edges of stoichiometric CeOBiS 2 . While bulk of the sample is semiconducting, the embedded metallic phase is characterized by the usual electron pocket at X point, similar to the Fermi surface of doped BiS 2 -based superconductors. Typical size of the observed metallic domain is larger than the superconducting correlation length of the system suggesting that the observed superconductivity in undoped CeOBiS 2 might be due to this embedded metallic phase at the defects. The results also suggest a possible way to develop new systems by manipulation of the defects in these chalcogenides with structural instability.

    UR - http://www.scopus.com/inward/record.url?scp=85041642813&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=85041642813&partnerID=8YFLogxK

    U2 - 10.1038/s41598-018-20351-y

    DO - 10.1038/s41598-018-20351-y

    M3 - Article

    VL - 8

    JO - Scientific Reports

    JF - Scientific Reports

    SN - 2045-2322

    IS - 1

    M1 - 20351

    ER -