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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



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