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Beyond the T-1 limit: Singlet nuclear spin states in low magnetic fields

Beyond the T-1 limit: Singlet nuclear spin states in low magnetic fields
Beyond the T-1 limit: Singlet nuclear spin states in low magnetic fields
Low-field nuclear spin singlet states may be used to store nuclear spin order in a room temperature liquid for a time much longer than the spin-lattice relaxation time constant T-1. The low-field nuclear spin singlets are unaffected by intramolecular dipole-dipole relaxation, which is generally the predominant relaxation mechanism. We demonstrate storage of nuclear spin order for more than 10 times longer than the measured value of T-1. This phenomenon may facilitate the development of nuclear spin hyperpolarization methods and may allow the study of motional processes which occur too slowly for existing NMR techniques. This is the first time that the memory of nuclear spins has been extended well beyond the T-1 limit in a system lacking intrinsic magnetic equivalence.
decoherence-free subspaces, quantum information, nmr-spectroscopy, para-hydrogen, resonance, subsystems, polarization, computation, alignment
0031-9007
153003-[4pp]
Carravetta, M.
1b12fa96-4a6a-4689-ab3b-ccc68f1d7691
Johannessen, O.G.
799ccc8c-a2e7-4305-a03a-2dc9f42564ef
Levitt, M.H.
bcc5a80a-e5c5-4e0e-9a9a-249d036747c3
Carravetta, M.
1b12fa96-4a6a-4689-ab3b-ccc68f1d7691
Johannessen, O.G.
799ccc8c-a2e7-4305-a03a-2dc9f42564ef
Levitt, M.H.
bcc5a80a-e5c5-4e0e-9a9a-249d036747c3

Carravetta, M., Johannessen, O.G. and Levitt, M.H. (2004) Beyond the T-1 limit: Singlet nuclear spin states in low magnetic fields. Physical Review Letters, 92 (15), 153003-[4pp].

Record type: Article

Abstract

Low-field nuclear spin singlet states may be used to store nuclear spin order in a room temperature liquid for a time much longer than the spin-lattice relaxation time constant T-1. The low-field nuclear spin singlets are unaffected by intramolecular dipole-dipole relaxation, which is generally the predominant relaxation mechanism. We demonstrate storage of nuclear spin order for more than 10 times longer than the measured value of T-1. This phenomenon may facilitate the development of nuclear spin hyperpolarization methods and may allow the study of motional processes which occur too slowly for existing NMR techniques. This is the first time that the memory of nuclear spins has been extended well beyond the T-1 limit in a system lacking intrinsic magnetic equivalence.

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More information

Published date: 14 April 2004
Additional Information: Article number: 153003
Keywords: decoherence-free subspaces, quantum information, nmr-spectroscopy, para-hydrogen, resonance, subsystems, polarization, computation, alignment

Identifiers

Local EPrints ID: 20158
URI: https://eprints.soton.ac.uk/id/eprint/20158
ISSN: 0031-9007
PURE UUID: 39eefa29-8863-4a39-b415-5a9066c9efcc
ORCID for M. Carravetta: ORCID iD orcid.org/0000-0002-6296-2104
ORCID for M.H. Levitt: ORCID iD orcid.org/0000-0001-9878-1180

Catalogue record

Date deposited: 22 Feb 2006
Last modified: 14 Jul 2018 00:34

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Contributors

Author: M. Carravetta ORCID iD
Author: O.G. Johannessen
Author: M.H. Levitt ORCID iD

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