title: Topological phase transitions driven by magnetic phase transitions in Fe(x)Bi2Te3 (0≤x≤0.1) single crystals.
abstract: We propose a phase diagram for Fe(x)Bi2Te3 (0≤x≤0.1) single crystals, which belong to a class of magnetically bulk-doped topological insulators. The evolution of magnetic correlations from ferromagnetic to antiferromagnetic gives rise to topological phase transitions, where the paramagnetic topological insulator of Bi2Te3 turns into a band insulator with ferromagnetic-cluster glassy behavior around x∼0.025, and it further evolves to a topological insulator with valence-bond glassy behavior, which spans over the region from x∼0.03 up to x∼0.1. This phase diagram is verified by measuring magnetization, magnetotransport, and angle-resolved photoemission spectra with theoretical discussions.
authors.affiliation: Department of Physics, College of Natural Science, Daegu University, Gyeongbuk 712-714, Republic of Korea. hjkim76@daegu.ac.kr
authors.forename: Heon-Jung
authors.initials: HJ
authors.lastname: Kim
authors.forename: Ki-Seok
authors.initials: KS
authors.lastname: Kim
authors.forename: J-F
authors.initials: JF
authors.lastname: Wang
authors.forename: V A
authors.initials: VA
authors.lastname: Kulbachinskii
authors.forename: K
authors.initials: K
authors.lastname: Ogawa
authors.forename: M
authors.initials: M
authors.lastname: Sasaki
authors.forename: A
authors.initials: A
authors.lastname: Ohnishi
authors.forename: M
authors.initials: M
authors.lastname: Kitaura
authors.forename: Y-Y
authors.initials: YY
authors.lastname: Wu
authors.forename: L
authors.initials: L
authors.lastname: Li
authors.forename: I
authors.initials: I
authors.lastname: Yamamoto
authors.forename: J
authors.initials: J
authors.lastname: Azuma
authors.forename: M
authors.initials: M
authors.lastname: Kamada
authors.forename: V
authors.initials: V
authors.lastname: Dobrosavljević