@article{b5460a06d6ae4853b515aa056cdc7997,
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 T. Mizokawa and Saini, {N. L.}",
note = "Funding Information: We thank Elettra staff for the assistance during the measurements. T.S. acknowledges hospitality at the Sapienza University of Rome and the support from JSPS Research Fellowship. The work was partly supported by Grants-in-Aid for Scientific Research (Nos JP15H03693, JP15H05884, JP16K05454, 16H04493, 16J05692 and 15H03691, 15K05178) and the Program for Promoting the Enhancement of Research University from MEXT and the Program for Advancing Strategic International Networks to Accelerate the Circulation of Talented Researchers from JSPS. The work is a part of the executive protocols of general agreements for cooperation between the Sapienza and the University of Tokyo, Okayama University and Tokyo Metropolitan University. The work at Sapienza is partially supported by PRIN2012 (grant number 2012X3YFZ2).",
year = "2018",
month = dec,
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",
}