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  Torsional instability in the single-chain limit of a transition metal trichalcogenide

Pham, T., Oh, S., Stetz, P., Onishi, S., Kisielowski, C., Cohen, M. L., et al. (2018). Torsional instability in the single-chain limit of a transition metal trichalcogenide. Science, 361(6399), 263-266. doi:10.1126/science.aat4749.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-E1F2-F Version Permalink: http://hdl.handle.net/21.11116/0000-0001-E1F5-C
Genre: Journal Article

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 Creators:
Pham, Thang1, Author
Oh, Sehoon1, Author
Stetz, Patrick1, Author
Onishi, Seita2, Author              
Kisielowski, Christian1, Author
Cohen, Marvin L.1, Author
Zettl, Alex1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Physics of Unconventional Metals and Superconductors, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_2466700              

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 Abstract: The scientific bounty resulting from the successful isolation of few to single layers of two-dimensional materials suggests that related new physics resides in the few-to single-chain limit of one-dimensional materials. We report the synthesis of the quasi-one-dimensional transition metal trichalcogenide NbSe3 (niobium triselenide) in the few-chain limit, including the realization of isolated single chains. The chains are encapsulated in protective boron nitride or carbon nanotube sheaths to prevent oxidation and to facilitate characterization. Transmission electron microscopy reveals static and dynamic structural torsional waves not found in bulk NbSe3 crystals. Electronic structure calculations indicate that charge transfer drives the torsional wave instability. Very little covalent bonding is found between the chains and the nanotube sheath, leading to relatively unhindered longitudinal and torsional dynamics for the encapsulated chains.

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Language(s): eng - English
 Dates: 2018-07-202018-07-20
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: ISI: 000439145800039
DOI: 10.1126/science.aat4749
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Title: Science
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Association for the Advancement of Science
Pages: - Volume / Issue: 361 (6399) Sequence Number: - Start / End Page: 263 - 266 Identifier: ISSN: 0036-8075
CoNE: /journals/resource/991042748276600_1