Controlling the Spin Texture of Topological Insulators by Rational Design of Organic Molecules
We present a rational design approach to customize the spin texture of surface states of a topological insulator. This approach relies on the extreme multifunctionality of organic molecules that are used to functionalize the surface of the prototypical topological insulator (TI) Bi2Se3. For the rati...
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Published in | Nano letters Vol. 15; no. 9; pp. 6022 - 6029 |
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Main Authors | , , , , , , , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
United States
American Chemical Society
09.09.2015
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Subjects | |
Online Access | Get full text |
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Summary: | We present a rational design approach to customize the spin texture of surface states of a topological insulator. This approach relies on the extreme multifunctionality of organic molecules that are used to functionalize the surface of the prototypical topological insulator (TI) Bi2Se3. For the rational design we use theoretical calculations to guide the choice and chemical synthesis of appropriate molecules that customize the spin texture of Bi2Se3. The theoretical predictions are then verified in angular-resolved photoemission experiments. We show that, by tuning the strength of molecule–TI interaction, the surface of the TI can be passivated, the Dirac point can energetically be shifted at will, and Rashba-split quantum-well interface states can be created. These tailored interface propertiespassivation, spin-texture tuning, and creation of hybrid interface stateslay a solid foundation for interface-assisted molecular spintronics in spin-textured materials. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1530-6984 1530-6992 |
DOI: | 10.1021/acs.nanolett.5b02213 |