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Hyperfine energy levels of alkali-metal dimers : ground-state polar molecules in electric and magnetic fields.

Aldegunde, J. and Rivington, Ben A. and Zuchowski, Piotr S. and Hutson, Jeremy M. (2008) 'Hyperfine energy levels of alkali-metal dimers : ground-state polar molecules in electric and magnetic fields.', Physical review A., 78 (3). 033434.

Abstract

We investigate the energy levels of heteronuclear alkali-metal dimers in levels correlating with the lowest rotational level of the ground electronic state, which are important in efforts to produce ground-state ultracold molecules. We use density-functional theory to calculate nuclear quadrupole and magnetic coupling constants for KRb and RbCs and explore the hyperfine structure in the presence of electric and magnetic fields. For nonrotating states, the zero-field splittings are dominated by the electron-mediated part of the nuclear spin-spin coupling. They are a few kilohertz for KRb isotopologs and a few tens of kilohertz for RbCs isotopologs.

Item Type:Article
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Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1103/PhysRevA.78.033434
Publisher statement:© 2008 The American Physical Society
Date accepted:No date available
Date deposited:24 June 2013
Date of first online publication:September 2008
Date first made open access:No date available

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