Quasiparticle interference on the surface of Bi2Se3 induced by cobalt adatom in the absence of ferromagnetic ordering
Use this link to cite this item : https://ir.lib.hiroshima-u.ac.jp/00033891
ID | 33891 |
file | |
creator |
Ye, Mao
Eremeev, S. V.
Kuroda, Kenta
Krasovskii, E. E.
Chulkov, E. V.
Takeda, Yukiharu
Saito, Yuji
Okamoto, Kazuaki
Zhu, S. Y.
Arita, Masashi
Ueda, Yoshifumi
|
NDC |
Physics
|
abstract | Quasiparticle interference induced by cobalt adatoms on the surface of the topological insulator Bi2Se3 is studied by scanning tunneling microscopy, angle-resolved photoemission spectroscopy, and x-ray magnetic circular dichroism. It is found that Co atoms are selectively adsorbed on top of Se sites and act as strong scatterers at the surface, generating anisotropic standing waves. A long-range magnetic order is found to be absent, and the surface state Dirac cone remains gapless. The anisotropy of the standing wave is ascribed to the heavily warped iso-energy contour of unoccupied states, where the scattering is allowed due to a nonzero out-of-plane spin.
|
journal title |
Physical Review B
|
volume | Volume 85
|
issue | Issue 20
|
start page | 205317
|
date of issued | 2012
|
publisher | American Physical Society
|
issn | 1098-0121
|
ncid | |
publisher doi | |
language |
eng
|
nii type |
Journal Article
|
HU type |
Journal Articles
|
DCMI type | text
|
format | application/pdf
|
text version | publisher
|
rights | (c) 2012 American Physical Society
|
relation url | |
department |
Graduate School of Science
Hiroshima Synchrotron Radiation Center
|
Last 12 months's access : ? times
Last 12 months's DL: ? times
This month's access: ? times
This month's DL: ? times