Quantum oscillations in a topological insulator Bi 2Te 2Se with large bulk resistivity (6 Ω cm)

Jun Xiong; A. C. Petersen; Dongxia Qu; Y. S. Hor; R. J. Cava; N. P. Ong

doi:10.1016/j.physe.2011.09.011

Quantum oscillations in a topological insulator Bi ₂Te ₂Se with large bulk resistivity (6 Ω cm)

Jun Xiong, A. C. Petersen, Dongxia Qu, Y. S. Hor, R. J. Cava, N. P. Ong

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Abstract

We report the observation of prominent Shubnikovde Haas oscillations in a Topological Insulator, Bi ₂Te ₂Se, with large bulk resistivity (6Ωcm at 4 K). By fitting the SdH oscillations, we infer a large metallicity parameter ^kFℓ=41, with a surface mobility ( ^μs∼2800 ^cm2/Vs) much larger than the bulk mobility ( ^μb∼50 ^cm2/Vs). The plot of the index fields ^Bν vs. filling factor ν shows a 12-shift, consistent with massless, Dirac states.

Original language	English (US)
Pages (from-to)	917-920
Number of pages	4
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	44
Issue number	5
DOIs	https://doi.org/10.1016/j.physe.2011.09.011
State	Published - Feb 2012

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics

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10.1016/j.physe.2011.09.011

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title = "Quantum oscillations in a topological insulator Bi 2Te 2Se with large bulk resistivity (6 Ω cm)",

abstract = "We report the observation of prominent Shubnikovde Haas oscillations in a Topological Insulator, Bi 2Te 2Se, with large bulk resistivity (6Ωcm at 4 K). By fitting the SdH oscillations, we infer a large metallicity parameter kFℓ=41, with a surface mobility ( μs∼2800 cm2/Vs) much larger than the bulk mobility ( μb∼50 cm2/Vs). The plot of the index fields Bν vs. filling factor ν shows a 12-shift, consistent with massless, Dirac states.",

author = "Jun Xiong and Petersen, {A. C.} and Dongxia Qu and Hor, {Y. S.} and Cava, {R. J.} and Ong, {N. P.}",

note = "Funding Information: We acknowledge support from the National Science Foundation under Grant DMR 0819860 and from the Nano Electronics Research Corporation (Award 2010-NE-2010G). We thank Liang Fu, Duncan Haldane and Andrei Bernevig for explaining the filling of LLs in the 2D Dirac system.",

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doi = "10.1016/j.physe.2011.09.011",

language = "English (US)",

volume = "44",

pages = "917--920",

journal = "Physica E: Low-Dimensional Systems and Nanostructures",

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T1 - Quantum oscillations in a topological insulator Bi 2Te 2Se with large bulk resistivity (6 Ω cm)

AU - Xiong, Jun

AU - Petersen, A. C.

AU - Qu, Dongxia

AU - Hor, Y. S.

AU - Cava, R. J.

AU - Ong, N. P.

N1 - Funding Information: We acknowledge support from the National Science Foundation under Grant DMR 0819860 and from the Nano Electronics Research Corporation (Award 2010-NE-2010G). We thank Liang Fu, Duncan Haldane and Andrei Bernevig for explaining the filling of LLs in the 2D Dirac system.

PY - 2012/2

Y1 - 2012/2

N2 - We report the observation of prominent Shubnikovde Haas oscillations in a Topological Insulator, Bi 2Te 2Se, with large bulk resistivity (6Ωcm at 4 K). By fitting the SdH oscillations, we infer a large metallicity parameter kFℓ=41, with a surface mobility ( μs∼2800 cm2/Vs) much larger than the bulk mobility ( μb∼50 cm2/Vs). The plot of the index fields Bν vs. filling factor ν shows a 12-shift, consistent with massless, Dirac states.

AB - We report the observation of prominent Shubnikovde Haas oscillations in a Topological Insulator, Bi 2Te 2Se, with large bulk resistivity (6Ωcm at 4 K). By fitting the SdH oscillations, we infer a large metallicity parameter kFℓ=41, with a surface mobility ( μs∼2800 cm2/Vs) much larger than the bulk mobility ( μb∼50 cm2/Vs). The plot of the index fields Bν vs. filling factor ν shows a 12-shift, consistent with massless, Dirac states.

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JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

IS - 5

ER -

Quantum oscillations in a topological insulator Bi ₂Te ₂Se with large bulk resistivity (6 Ω cm)

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