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Magnetic Feshbach resonances between atoms in 2S and 3P0 states: mechanisms and dependence on atomic properties [dataset] Open Access

Magnetically tunable Feshbach resonances exist in ultracold collisions between atoms in 2S and 3P0 states, such as an alkali-metal atom colliding with Yb or Sr in a clock state. We investigate the mechanisms of these resonances and identify the terms in the collision Hamiltonian responsible for them. They involve indirect coupling between the open and closed channels, via intermediate channels involving atoms in 3P1 states. The resonance widths are generally proportional to the square of the magnetic field and are strongly enhanced when the magnitude of the background scattering length is large. For any given pair of atoms, the scattering length can be tuned discretely by choosing different isotopes of the 3P0 atom. For each combination of an alkali-metal atom and either Yb or Sr, we consider the prospects of finding an isotopic combination that has both a large background scattering length and resonances at high but experimentally accessible field. We conclude that 87Rb+Yb, Cs+Yb and 85Rb+Sr are particularly promising combinations.

Descriptions

Resource type

Dataset

Contributors

Creator: Mukherjee, Bijit ¹
Creator: Frye, Matthew D. ¹
Creator: Hutson, Jeremy M. ¹

¹ Durham University, UK

Funder

Engineering and Physical Sciences Research Council (EPSRC) Grant EP/P01058X/1

Research methods

Other description

Includes code written in Fortran. See also:  https://github.com/molscat/molscat

Keyword

Ultracold collisions
Cold and ultracold molecules
Atomic & molecular collisions
Scattering theory

Subject

Location

Language

Cited in

Identifier

ark:/32150/r1fn106x941
doi:10.15128/r1fn106x941

Rights

Creative Commons Attribution 4.0 International (CC BY)

Publisher

Durham University

Date Created

File Details

Depositor

B. Mukherjee

Date Uploaded

16 November 2022, 14:11:46

Date Modified

17 November 2022, 14:11:58

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File format: zip (ZIP Format)

Mime type: application/zip

File size: 130732

Last modified: 2022:11:16 14:12:48+00:00

Filename: Data_for_repository.zip

Original checksum: d0b5ce38c01692415413ce401d6dbc12