Emerged Metallicity in Molecular Ferromagnetic Wires
Name
1830653.pdf
Description
Accepted version
Size
4.2 MB
Format
Adobe PDF
Checksum (MD5)
373f6888bf5f6c2b387bdc47c3601869
Author(s)
Huang, Yulong
Mitchell, Travis
Yost, Dillon C
Hu, Yong
Benedict, Jason B
Grossman, Jeffrey C
Ren, Shenqiang
Date Issued
2021
Journal
Nano Letters
Publisher
American Chemical Society (ACS)
Citation
Huang, Yulong, Mitchell, Travis, Yost, Dillon C, Hu, Yong, Benedict, Jason B et al. 2021. "Emerged Metallicity in Molecular Ferromagnetic Wires." Nano Letters, 21 (22).
Version
Author's final manuscript
Abstract
Supramolecular engineering bridges molecular assembly with macromolecular charge-transfer salts, promising the design to construct supramolecular architectures that integrate cooperative properties difficult or impossible to find in conventional lattices. Here, we report the crystal engineering design and kinetic growth of one-dimensional supramolecular wires composed of bis(ethylenedithio)tetrathiafulvalene (ET+) cation and polymeric Cu[N(CN)2]2- anion. A bulk ferromagnetic order is discovered for filling up the gap where strong ferromagnetism is missing in such ET molecule-based charge-transfer salts. Metallicity is induced by electric current from the semiconducting wire, which is attributed to strain effect by tuning its close molecular contact. This structural feature is evidenced through the combination of various mechanistic spectroscopic studies. Electric dipole is established from the close molecular contacts and is suggestive to stabilize ferromagnetic spin interaction through anions bridging spin sites. The breakthrough shown here provides a pathway to explore low-dimensional supramolecular materials exhibiting strong electron correlation, metallicity, and ferromagnetism.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1021/ACS.NANOLETT.1C03663
