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 | |
| Publication status | Published - 2011 Dec 6 |
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ASJC Scopus subject areas
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials
Cite this
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; Kondoh, 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
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TY - JOUR
T1 - Topological transition in Bi 1-xSb x studied as a function of Sb doping
AU - Nakamura, Fumitaka
AU - Kousa, Yuka
AU - Taskin, Alexey A.
AU - Takeichi, Yasuo
AU - Nishide, Akinori
AU - Kakizaki, Akito
AU - D'Angelo, Marie
AU - Lefevre, Patrick
AU - Bertran, Francois
AU - Taleb-Ibrahimi, Amina
AU - Komori, Fumio
AU - Kimura, Shin Ichi
AU - Kondoh, Hiroshi
AU - Ando, Yoichi
AU - Matsuda, Iwao
PY - 2011/12/6
Y1 - 2011/12/6
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevB.84.235308
DO - 10.1103/PhysRevB.84.235308
M3 - Article
AN - SCOPUS:84855390256
VL - 84
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 23
M1 - 235308
ER -