title: 2D Electronic Transport with Strong Spin-Orbit Coupling in Bi(2-) Square Net of Y2O2Bi Thin Film Grown by Multilayer Solid-Phase Epitaxy.
abstract: Highly crystalline Y2O2Bi epitaxial thin film with monatomic Bi(2-) square net layer was grown by newly developed multilayer solid phase epitaxy. High reactivity of the nanometer-scale multilayered precursor enabled efficient formation of single crystalline Y2O2Bi phase with one-step heating. The reductive state of Bi(2-) square net was observed by X-ray photoemission spectroscopy. The electrical resistivity was one order lower than that of polycrystalline powder in previous study. The magnetotransport showed weak antilocalization effect well fitted by the Hikami-Larkin-Nagaoka model, exhibiting two-dimensional electronic nature with strong spin-orbit coupling in the Bi(2-) square net.
authors.affiliation: Department of Chemistry, Graduate School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.|Department of Chemistry, Graduate School of Science, Tohoku University , 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
authors.forename: Ryosuke
authors.initials: R
authors.lastname: Sei
authors.affiliation: Department of Chemistry, Graduate School of Science, Tohoku University , 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan.|CREST, Japan Science and Technology Agency , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
authors.forename: Tomoteru
authors.initials: T
authors.lastname: Fukumura
authors.affiliation: Department of Chemistry, Graduate School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.|CREST, Japan Science and Technology Agency , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Hasegawa
keywords: layered oxide; solid phase epitaxy; strong spin−orbit coupling; thin film growth; topological insulator; two-dimensional electronic transport