Journal
NANO LETTERS
Volume 15, Issue 5, Pages 2787-2793Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl503697c
Keywords
Nanoplatelet; screw dislocation; crystal growth; free charge carriers; topological insulator
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Funding
- DFG [SFB 917]
- Excellence Initiative of the federal and state governments
- Ministry of Innovation of North Rhine-Westphalia
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We report nanoscale-resolved optical investigations, on the: local Material properties of Sb2Te3 hexagonal platelets grown by solvothermal synthesis. Using mid-infrared near field microscopy, we find a highly symmetric pattern, Which is correlated to a growth spiral and Which extends over the entire platelet As the origin of the :optical contrast, we identify domains with different densities of charge carriers. On Sb2Te3 samples grown by other means, we did not find a comparable domain structure.
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