Experimental Verification of PbBi2Te4 as a 3D Topological Insulator
Physical Review Letters Volume 108 Issue 20
Page 206803-
published_at 2012
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| File | |
| Title ( eng ) |
Experimental Verification of PbBi2Te4 as a 3D Topological Insulator
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| Creator |
Kuroda Kenta
Miyahara Hirokazu
Ye Mao
Eremeev S. V.
Koroteev Yu. M.
Krasovskii E. E.
Chulkov E. V.
Hiramoto Shozo
Arita Masashi
Ueda Yoshifumi
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| Source Title |
Physical Review Letters
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| Volume | 108 |
| Issue | 20 |
| Start Page | 206803 |
| Abstract |
The experimental evidence is presented of the topological insulator state in PbBi2Te4. A single surface Dirac cone is observed by angle-resolved photoemission spectroscopy with synchrotron radiation. Topological invariants Z2 are calculated from the ab initio band structure to be 1;(111). The observed two-dimensional isoenergy contours in the bulk energy gap are found to be the largest among the known three-dimensional topological insulators. This opens a pathway to achieving a sufficiently large spin current density in future spintronic devices.
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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] 0031-9007
[DOI] 10.1103/PhysRevLett.108.206803
[NCID] AA00773679
[DOI] http://dx.doi.org/10.1103/PhysRevLett.108.206803
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