Topological transition in Bi 1-xSb x studied as a function of Sb doping

Fumitaka Nakamura; Yuka Kousa; Alexey A. Taskin; Yasuo Takeichi; Akinori Nishide; Akito Kakizaki; Marie D'Angelo; Patrick Lefevre; Francois Bertran; Amina Taleb-Ibrahimi; Fumio Komori; Shin Ichi Kimura; Hiroshi Kondo; Yoichi Ando; Iwao Matsuda

doi:10.1103/PhysRevB.84.235308

Topological transition in Bi _1-xSb _x studied as a function of Sb doping

Fumitaka Nakamura, Yuka Kousa, Alexey A. Taskin, Yasuo Takeichi, Akinori Nishide, Akito Kakizaki, Marie D'Angelo, Patrick Lefevre, Francois Bertran, Amina Taleb-Ibrahimi, Fumio Komori, Shin Ichi Kimura, Hiroshi Kondo, Yoichi Ando, Iwao Matsuda

Department of Chemistry

Research output: Contribution to journal › Article

21 Citations (Scopus)

Abstract

Spin- and angle-resolved photoemission spectroscopy measurements were performed on Bi _1-xSb _x samples at x=0.04, 0.07, and 0.21 to study the change of the surface band structure from nontopological to topological. Energy shift of the T and L _s bulk bands with Sb concentration is quantitatively evaluated. An edge state becomes topologically nontrivial at x=0.04. An additional trivial edge state appears at the L band gap that forms at x0.04 and apparently hybridize with the nontrivial edge state. A scenario for the topological transition mechanism is presented. Related issues of self-energy and temperature dependence of the surface state are also considered.

Original language	English
Article number	235308
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	84
Issue number	23
DOIs	https://doi.org/10.1103/PhysRevB.84.235308
Publication status	Published - 2011 Dec 6

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ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Cite this

Nakamura, F., Kousa, Y., Taskin, A. A., Takeichi, Y., Nishide, A., Kakizaki, A., D'Angelo, M., Lefevre, P., Bertran, F., Taleb-Ibrahimi, A., Komori, F., Kimura, S. I., Kondo, H., Ando, Y., & Matsuda, I. (2011). Topological transition in Bi _1-xSb _x studied as a function of Sb doping. Physical Review B - Condensed Matter and Materials Physics, 84(23), [235308]. https://doi.org/10.1103/PhysRevB.84.235308

Topological transition in Bi _1-xSb _x studied as a function of Sb doping. / Nakamura, Fumitaka; Kousa, Yuka; Taskin, Alexey A.; Takeichi, Yasuo; Nishide, Akinori; Kakizaki, Akito; D'Angelo, Marie; Lefevre, Patrick; Bertran, Francois; Taleb-Ibrahimi, Amina; Komori, Fumio; Kimura, Shin Ichi; Kondo, Hiroshi; Ando, Yoichi; Matsuda, Iwao.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 84, No. 23, 235308, 06.12.2011.

Research output: Contribution to journal › Article

Nakamura, F, Kousa, Y, Taskin, AA, Takeichi, Y, Nishide, A, Kakizaki, A, D'Angelo, M, Lefevre, P, Bertran, F, Taleb-Ibrahimi, A, Komori, F, Kimura, SI, Kondo, H, Ando, Y & Matsuda, I 2011, 'Topological transition in Bi _1-xSb _x studied as a function of Sb doping', Physical Review B - Condensed Matter and Materials Physics, vol. 84, no. 23, 235308. https://doi.org/10.1103/PhysRevB.84.235308

Nakamura, Fumitaka ; Kousa, Yuka ; Taskin, Alexey A. ; Takeichi, Yasuo ; Nishide, Akinori ; Kakizaki, Akito ; D'Angelo, Marie ; Lefevre, Patrick ; Bertran, Francois ; Taleb-Ibrahimi, Amina ; Komori, Fumio ; Kimura, Shin Ichi ; Kondo, Hiroshi ; Ando, Yoichi ; Matsuda, Iwao. / Topological transition in Bi _1-xSb _x studied as a function of Sb doping. In: Physical Review B - Condensed Matter and Materials Physics. 2011 ; Vol. 84, No. 23.

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10.1103/PhysRevB.84.235308