Long-lived heteronuclear spin-singlet states in liquids at a zero magnetic field

doi:10.1103/PhysRevLett.112.077601

Long-lived heteronuclear spin-singlet states in ...

Bibliographic description

punktacja MNiSW [2014 A]: 45

title:	Long-lived heteronuclear spin-singlet states in liquids at a zero magnetic field
author:	Emondts Meike, Ledbetter Micah P., Pustelny Szymon , Theis Thomas, Patton Brian, Blanchard John W., Butler Mark C., Budker Dmitry, Pines Alexander
Journal title:	Physical Review Letters
volume:	112
issue:	7
date of publication:	2014
article ID:	077601
ISSN:	0031-9007
eISSN:	1079-7114 1092-0145
DOI:	10.1103/PhysRevLett.112.077601
language:	English
Journal language:	English
abstract in english:	We report an observation of long-lived spin-singlet states in a C−H113 spin pair in a zero magnetic field. In C13-labeled formic acid, we observe spin-singlet lifetimes as long as 37 s, about a factor of 3 longer than the T1 lifetime of dipole polarization in the triplet state. In contrast to common high-field experiments, the observed coherence is a singlet-triplet coherence with a lifetime T2 longer than the T1 lifetime of dipole polarization in the triplet manifold. Moreover, we demonstrate that heteronuclear singlet states formed between a H1 and a C13 nucleus can exhibit longer lifetimes than the respective triplet states even in the presence of additional spins that couple to the spin pair of interest. Although long-lived homonuclear spin-singlet states have been extensively studied, this is the first experimental observation of analogous singlet states in heteronuclear spin pairs.
number of pulisher's sheets:	0,5
affiliation:	Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego
type:	journal article
subtype:	academic paper