Quasiparticle interference on the surface of Bi2Se3 induced by cobalt adatom in the absence of ferromagnetic ordering
Physical Review B Volume 85 Issue 20
Page 205317-
published_at 2012
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| File | |
| Title ( eng ) |
Quasiparticle interference on the surface of Bi2Se3 induced by cobalt adatom in the absence of ferromagnetic ordering
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| 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
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| Source Title |
Physical Review B
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| Volume | 85 |
| Issue | 20 |
| Start Page | 205317 |
| 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.
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| NDC |
Physics [ 420 ]
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
American Physical Society
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| Date of Issued | 2012 |
| Rights |
(c) 2012 American Physical Society
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 1098-0121
[DOI] 10.1103/PhysRevB.85.205317
[NCID] AA11187113
[DOI] http://dx.doi.org/10.1103/PhysRevB.85.205317
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