Overhauser effects in non-conducting solids at 1.2 K
Name
nihms927351.pdf
Description
Accepted version
Size
575.5 KB
Format
Adobe PDF
Checksum (MD5)
1103abf6aad72c0244968ce974367d72
Author(s)
Ji, X.
Can, T. V.
Mentink-Vigier, Frédéric
Bornet, A.
Milani, J.
Vuichoud, B.
Caporini, M. A.
Griffin, R.G.
Goldman, M.
Bodenhausen, G.
Date Issued
January 2018
Journal
Journal of Magnetic Resonance
Publisher
Elsevier BV
Citation
Ji, X., et al., "Overhauser effects in non-conducting solids at 1.2 K." Journal of Magnetic Resonance 286 (Jan. 2018): p. 138-42 doi 10.1016/J.JMR.2017.11.017 ©2018 Author(s)
Version
Author's final manuscript
Abstract
Recently, it was observed that protons in non-conducting solids doped with 1,3-bisdiphenylene-2-phenylallyl (BDPA) or its sulfonated derivative (SA-BDPA) can be polarized through Overhauser effects via resonant microwave irradiation. These effects were present under magic angle spinning conditions in magnetic fields between 5 and 18.8 T and at temperatures near 100 K. This communication reports similar effects in static samples at 6.7 T and, more importantly, at temperatures as low as 1.2 K, in a different dynamic regime than in the previous study. Our results provide new information towards understanding the mechanism of the Overhauser effect in non-conducting solids. We discuss possible origins of the fluctuations that can give rise to an Overhauser effect at such low temperatures.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Francis Bitter Magnet Laboratory (Massachusetts Institute of Technology)
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivs License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/J.JMR.2017.11.017
