Torsional instability in the single-chain limit of a transition metal trichalcogenide
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. Here,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 NbSe3crystals. Electronic structure calculations indicate that charge transfer drives the torsional wave instability. Finally, 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.
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
- OSTI Identifier:
- 1460921
- Alternate Identifier(s):
- OSTI ID: 1530369
- Grant/Contract Number:
- AC02-05CH11231
- Resource Type:
- Published Article
- Journal Name:
- Science
- Additional Journal Information:
- Journal Name: Science Journal Volume: 361 Journal Issue: 6399; Journal ID: ISSN 0036-8075
- Publisher:
- AAAS
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Pham, Thang, Oh, Sehoon, Stetz, Patrick, Onishi, Seita, Kisielowski, Christian, Cohen, Marvin L., and Zettl, Alex. Torsional instability in the single-chain limit of a transition metal trichalcogenide. United States: N. p., 2018.
Web. https://doi.org/10.1126/science.aat4749.
Pham, Thang, Oh, Sehoon, Stetz, Patrick, Onishi, Seita, Kisielowski, Christian, Cohen, Marvin L., & Zettl, Alex. Torsional instability in the single-chain limit of a transition metal trichalcogenide. United States. https://doi.org/10.1126/science.aat4749
Pham, Thang, Oh, Sehoon, Stetz, Patrick, Onishi, Seita, Kisielowski, Christian, Cohen, Marvin L., and Zettl, Alex. Thu .
"Torsional instability in the single-chain limit of a transition metal trichalcogenide". United States. https://doi.org/10.1126/science.aat4749.
@article{osti_1460921,
title = {Torsional instability in the single-chain limit of a transition metal trichalcogenide},
author = {Pham, Thang and Oh, Sehoon and Stetz, Patrick and Onishi, Seita and Kisielowski, Christian and Cohen, Marvin L. and Zettl, Alex},
abstractNote = {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. Here,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 NbSe3crystals. Electronic structure calculations indicate that charge transfer drives the torsional wave instability. Finally, 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.},
doi = {10.1126/science.aat4749},
journal = {Science},
number = 6399,
volume = 361,
place = {United States},
year = {2018},
month = {7}
}
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https://doi.org/10.1126/science.aat4749
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Works referencing / citing this record:
Electrically Driven Dynamics of Few‐Chain NbSe 3
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