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 - Kondo, 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.
UR - http://www.scopus.com/inward/record.url?scp=84855390256&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84855390256&partnerID=8YFLogxK
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 -