$Feshbach Resonances in p-Wave Three-Body Recombination within Fermi-Fermi Mixtures of Open-Shell ^{6}Li and Closed-Shell ^{173}Yb Atoms$
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Feshbach Resonances in p-Wave Three-Body Recombination within Fermi-Fermi Mixtures of Open-Shell ^{6}Li and Closed-Shell ^{173}Yb Atoms

We report on the observation of magnetic Feshbach resonances in a Fermi-Fermi mixture of ultracold atoms with extreme mass imbalance and on their unique p-wave dominated three-body recombination processes. Our system consists of open-shell alkali-metal ^{6}Li and closed-shell ^{173}Yb atoms, both sp...

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Autores principales:	Alaina Green, Hui Li, Jun Hui See Toh, Xinxin Tang, Katherine C. McCormick, Ming Li, Eite Tiesinga, Svetlana Kotochigova, Subhadeep Gupta
Formato:	article
Lenguaje:	EN
Publicado:	American Physical Society 2020
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/cf75a3d3000246fab63899f5c8b700bc
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spelling	oai:doaj.org-article:cf75a3d3000246fab63899f5c8b700bc2021-12-02T14:10:46ZFeshbach Resonances in p-Wave Three-Body Recombination within Fermi-Fermi Mixtures of Open-Shell ^{6}Li and Closed-Shell ^{173}Yb Atoms10.1103/PhysRevX.10.0310372160-3308https://doaj.org/article/cf75a3d3000246fab63899f5c8b700bc2020-08-01T00:00:00Zhttp://doi.org/10.1103/PhysRevX.10.031037http://doi.org/10.1103/PhysRevX.10.031037https://doaj.org/toc/2160-3308We report on the observation of magnetic Feshbach resonances in a Fermi-Fermi mixture of ultracold atoms with extreme mass imbalance and on their unique p-wave dominated three-body recombination processes. Our system consists of open-shell alkali-metal ^{6}Li and closed-shell ^{173}Yb atoms, both spin polarized and held at various temperatures between 1 and 20 μK. We confirm that Feshbach resonances in this system are solely the result of a weak separation-dependent hyperfine coupling between the electronic spin of ^{6}Li and the nuclear spin of ^{173}Yb. Our analysis also shows that three-body recombination rates are controlled by the identical fermion nature of the mixture, even in the presence of s-wave collisions between the two species and with recombination rate coefficients outside the Wigner threshold regime at our lowest temperature. Specifically, a comparison of experimental and theoretical line shapes of the recombination process indicates that the characteristic asymmetric line shape as a function of applied magnetic field and a maximum recombination rate coefficient that is independent of temperature can only be explained by triatomic collisions with nonzero, p-wave total orbital angular momentum. The resonances can be used to form ultracold doublet ground-state molecules and to simulate quantum superfluidity in mass-imbalanced mixtures.Alaina GreenHui LiJun Hui See TohXinxin TangKatherine C. McCormickMing LiEite TiesingaSvetlana KotochigovaSubhadeep GuptaAmerican Physical SocietyarticlePhysicsQC1-999ENPhysical Review X, Vol 10, Iss 3, p 031037 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Alaina Green Hui Li Jun Hui See Toh Xinxin Tang Katherine C. McCormick Ming Li Eite Tiesinga Svetlana Kotochigova Subhadeep Gupta Feshbach Resonances in p-Wave Three-Body Recombination within Fermi-Fermi Mixtures of Open-Shell ^{6}Li and Closed-Shell ^{173}Yb Atoms
description	We report on the observation of magnetic Feshbach resonances in a Fermi-Fermi mixture of ultracold atoms with extreme mass imbalance and on their unique p-wave dominated three-body recombination processes. Our system consists of open-shell alkali-metal ^{6}Li and closed-shell ^{173}Yb atoms, both spin polarized and held at various temperatures between 1 and 20 μK. We confirm that Feshbach resonances in this system are solely the result of a weak separation-dependent hyperfine coupling between the electronic spin of ^{6}Li and the nuclear spin of ^{173}Yb. Our analysis also shows that three-body recombination rates are controlled by the identical fermion nature of the mixture, even in the presence of s-wave collisions between the two species and with recombination rate coefficients outside the Wigner threshold regime at our lowest temperature. Specifically, a comparison of experimental and theoretical line shapes of the recombination process indicates that the characteristic asymmetric line shape as a function of applied magnetic field and a maximum recombination rate coefficient that is independent of temperature can only be explained by triatomic collisions with nonzero, p-wave total orbital angular momentum. The resonances can be used to form ultracold doublet ground-state molecules and to simulate quantum superfluidity in mass-imbalanced mixtures.
format	article
author	Alaina Green Hui Li Jun Hui See Toh Xinxin Tang Katherine C. McCormick Ming Li Eite Tiesinga Svetlana Kotochigova Subhadeep Gupta
author_facet	Alaina Green Hui Li Jun Hui See Toh Xinxin Tang Katherine C. McCormick Ming Li Eite Tiesinga Svetlana Kotochigova Subhadeep Gupta
author_sort	Alaina Green
title	Feshbach Resonances in p-Wave Three-Body Recombination within Fermi-Fermi Mixtures of Open-Shell ^{6}Li and Closed-Shell ^{173}Yb Atoms
title_short	Feshbach Resonances in p-Wave Three-Body Recombination within Fermi-Fermi Mixtures of Open-Shell ^{6}Li and Closed-Shell ^{173}Yb Atoms
title_full	Feshbach Resonances in p-Wave Three-Body Recombination within Fermi-Fermi Mixtures of Open-Shell ^{6}Li and Closed-Shell ^{173}Yb Atoms
title_fullStr	Feshbach Resonances in p-Wave Three-Body Recombination within Fermi-Fermi Mixtures of Open-Shell ^{6}Li and Closed-Shell ^{173}Yb Atoms
title_full_unstemmed	Feshbach Resonances in p-Wave Three-Body Recombination within Fermi-Fermi Mixtures of Open-Shell ^{6}Li and Closed-Shell ^{173}Yb Atoms
title_sort	feshbach resonances in p-wave three-body recombination within fermi-fermi mixtures of open-shell ^{6}li and closed-shell ^{173}yb atoms
publisher	American Physical Society
publishDate	2020
url	https://doaj.org/article/cf75a3d3000246fab63899f5c8b700bc
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Feshbach Resonances in p-Wave Three-Body Recombination within Fermi-Fermi Mixtures of Open-Shell ^{6}Li and Closed-Shell ^{173}Yb Atoms

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