@article{48194f9025554a28b1743b9155375be2,
title = "Photoinduced phase transition from excitonic insulator to semimetal-like state in Ta2Ni1−xCoxSe5 (x = 0.10)",
abstract = "We report time-resolved angle-resolved photoemission study on Ta2Ni1−xCoxSe5 (x = 0.10) in which the excitonic insulator (EI) transition temperature is reduced by Co substitution for Ni. In the photoinduced phase, the conduction band is clearly observed and the energy gap between the conduction and valence bands is undetectably small within the energy resolution. Assuming that the energy gap is closed, the conduction band crosses or overlaps with the valence band near the Fermi level resembling a nodal semimetal.",
author = "Takumi Mitsuoka and Takeshi Suzuki and Hidenori Takagi and Naoyuki Katayama and Hiroshi Sawa and Minoru Nohara and Mari Watanabe and Jiadi Xu and Qianhui Ren and Masami Fujisawa and Teruto Kanai and Jiro Itatani and Shik Shin and Kozo Okazaki and Takashi Mizokawa",
note = "Funding Information: Acknowledgements We would like to thank enlightening discussions with Professor Hidetoshi Fukuyama and Professor Claude Monney. This work was partially supported by Grants-in-Aid from the Japan Society of the Promotion of Science (JSPS) (Nos. JP19H00659, JP19H00651, JP19H01818) and Grant-in-Aid for Scientific Research on Innovative Areas “Quantum Liquid Crystals” (No. JP19H05826). This work was carried out under the Visiting Researcher{\textquoteright}s Program of the Institute for Solid State Physics, the University of Tokyo (Proposal No. B219). Publisher Copyright: {\textcopyright}2020 The Physical Society of Japan",
year = "2020",
month = dec,
day = "15",
doi = "10.7566/JPSJ.89.124703",
language = "English",
volume = "89",
journal = "Journal of the Physical Society of Japan",
issn = "0031-9015",
publisher = "Physical Society of Japan",
number = "12",
}