Journal
NANO LETTERS
Volume 12, Issue 9, Pages 4711-4714Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl302108r
Keywords
Bi2Se3; nanoribbon; MOCVD; VLS; topological insulator
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Funding
- Sloan Foundation
- Packard Foundation
- NSF [DMR-0819860]
- NSF MRSEC program
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We characterize nanostructures of Bi2Se3 that are grown via metal-organic chemical vapor deposition using the precursors diethyl selenium and trimethyl bismuth. By adjusting growth parameters, we obtain either single-crystalline ribbons up to 10 mu m long or thin micrometer-sized platelets. Four-terminal resistance measurements yield a sample resistivity of 4 m Omega.cm. We observe weak antilocalization and extract a phase coherence length 1(phi) = 178 nm and spin-orbit length l(so) = 93 nm at T = 0.29 K. Our results are consistent with previous measurements on exfoliated samples and samples grown via physical vapor deposition.
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