@article{68baa951c0c74e4a9ca908034b331ea1,
title = "Corundum insulating phases in highly Ti-doped V2 O3 nanocrystals",
abstract = "Doping V2O3 with Ti stabilizes the corundum paramagnetic metallic phase and restricts the transition to the monoclinic antiferromagnetic insulating phase at lower temperatures. In this study, we investigated the dependence of phase stability on Ti concentration for V2O3 nanocrystals as small as 20 nm. Ti doping of several percent induces a high-temperature insulating phase preserving the magnetic transition without the crystal symmetry change. The emergence of the insulating phases, which are peculiar to this crystal size, can be attributed to the enhancement of the on-site Coulomb interaction U and increased mixing between a1g and egπ states accompanied by characteristic lattice parameter changes in the high Ti doping region.",
author = "Yoichi Ishiwata and Toru Maruyama and Sho Otsuru and Takuto Tsukahara and Hirofumi Ishii and Liao, {Yen Fa} and Tsuei, {Ku Ding} and Masaki Imamura and Kazutoshi Takahashi and Yuji Inagaki and Tatsuya Kawae and Tetsuya Kida and Satoshi Suehiro and Masashi Nantoh and Koji Ishibashi",
note = "Funding Information: We would like to thank K. Ushijima, M. Kakihara, and S. An at SPring-8 for their assistance with the XRD and HAXPES experiments (Proposal Nos. 2013B4253, 2014A4259, 2014B4135, 2014B4144, 2014B4255, 2015A4142, 2015A4250, 2015A4261, 2015B4136, 2015B4254, 2016A4138, 2016A4250 2016A4260, and 2016B4257). This work was supported by JSPS KAKENHI Grant No. JP17K05501. Transmission electron microscopy analyses were conducted with a JEM-1400 microscope spectrometer at the Analytical Research Center for Experimental Sciences, Saga University. Publisher Copyright: {\textcopyright} 2020 American Physical Society.",
year = "2020",
month = jan,
day = "16",
doi = "10.1103/PhysRevB.101.035415",
language = "English",
volume = "101",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Physical Society",
number = "3",
}