Crossover between two-dimensional surface state and three-dimensional bulk phase in Fe-doped Bi{sub 2}Te{sub 3}

Journal Article · Mon Jun 23 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4885148· OSTI ID:22303862

Jo, Na Hyun; Lee, Kyujoon; Jung, Myung-Hwa ^[1]; Kim, Jinsu; Jang, Jungwon; Kim, Jinhee ^[2]

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1. Department of Physics, Sogang University, Seoul 121-742 (Korea, Republic of)
2. Korea Research Institute of Standard Science, Daejeon 305-340 (Korea, Republic of)

In Fe-doped Bi{sub 2}Te{sub 3}, we have observed higher mobility, larger linear magnetoresistance, and anomalous quantum oscillations. The angle dependence of Shubnikov-de Haas (SdH) oscillations gives two different periodicities depending on the angle from the c-axis. The low-angle SdH period is identified with a surface origin, while the high-angle period is against the surface origin. The high-angle SdH period well agrees with the de Haas-van Alphen (dHvA) period with a bulk origin. The physical parameters obtained from the quantum oscillations support the crossover between two-dimensional surface state and three-dimensional bulk phase by Fe doping in Bi{sub 2}Te{sub 3}.

• OSTI ID: 22303862
• Journal Information: Applied Physics Letters, Vol. 104, Issue 25; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BISMUTH TELLURIDES
CARRIER MOBILITY
DE HAAS-VAN ALPHEN EFFECT
DOPED MATERIALS
IRON ADDITIONS
MAGNETORESISTANCE
OSCILLATIONS
PERIODICITY
SHUBNIKOV-DE HAAS EFFECT
SURFACES