Experimental Verification of PbBi2Te4 as a 3D Topological Insulator
Use this link to cite this item : https://ir.lib.hiroshima-u.ac.jp/00033916
ID | 33916 |
file | |
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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NDC |
Physics
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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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journal title |
Physical Review Letters
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volume | Volume 108
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issue | Issue 20
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start page | 206803
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date of issued | 2012
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publisher | American Physical Society
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issn | 0031-9007
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ncid | |
publisher doi | |
language |
eng
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nii type |
Journal Article
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HU type |
Journal Articles
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DCMI type | text
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format | application/pdf
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text version | publisher
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rights | (c) 2012 American Physical Society
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relation url | |
department |
Graduate School of Science
Hiroshima Synchrotron Radiation Center
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