Towards Creating Fermionic Ground State Molecules of $^{23}$ Na $^{40}$ K with Strong Dipolar InteractionsTowards Creating Fermionic Ground State Molecules of $^{23}$Na$^{40}$K with Strong Dipolar Interactions

Jee Woo Park, Cheng-Hsun Wu, Jennifer M. Schloss +3 more

Bulletin of the American Physical SocietyJun 4, 20130 citations

Collisionally stable gas of bosonic dipolar ground-state molecules

Niccolò Bigagli, Claire Warner, Weijun Yuan +4 more

arXiv:2303.16845Nature PhysicsSep 4, 202365 citations

Ultracold Fermionic Feshbach Molecules of Na23K40

Cheng-Hsun Wu, Jee Woo Park, Peyman Ahmadi +2 more

We report on the formation of ultracold weakly bound Feshbach molecules of 23Na40K, the first fermionic molecule that is chemically stable in its absolute ground state. The lifetime of the nearly degenerate molecular gas exceeds 100 ms in the vicinity of the Feshbach resonance. The measured dependence of the molecular binding energy on the magnetic field demonstrates the open-channel character of the molecules over a wide field range and implies significant singlet admixture. This will enable efficient transfer into the singlet vibrational ground state, resulting in a stable molecular Fermi gas with strong dipolar interactions.We report on the formation of ultracold weakly bound Feshbach molecules of 23Na40K, the first fermionic molecule that is chemically stable in its absolute ground state. The lifetime of the nearly degenerate molecular gas exceeds 100 ms in the vicinity of the Feshbach resonance. The measured dependence of the molecular binding energy on the magnetic field demonstrates the open-channel character of the molecules over a wide field range and implies significant singlet admixture. This will enable efficient transfer into the singlet vibrational ground state, resulting in a stable molecular Fermi gas with strong dipolar interactions.

arXiv:1206.5023Physical Review LettersAug 20, 2012212 citations

Ultracold Fermionic Feshbach Molecules of [superscript 23]Na[superscript 40]K

Cheng-Hsun Wu, Jee Woo Park, Peyman Ahmadi +2 more

We report on the formation of ultracold weakly bound Feshbach molecules of [superscript 23]Na[superscript 40]K, the first fermionic molecule that is chemically stable in its absolute ground state. The lifetime of the nearly degenerate molecular gas exceeds 100 ms in the vicinity of the Feshbach resonance. The measured dependence of the molecular binding energy on the magnetic field demonstrates the open-channel character of the molecules over a wide field range and implies significant singlet admixture. This will enable efficient transfer into the singlet vibrational ground state, resulting in a stable molecular Fermi gas with strong dipolar interactions.We report on the formation of ultracold weakly bound Feshbach molecules of [superscript 23]Na[superscript 40]K, the first fermionic molecule that is chemically stable in its absolute ground state. The lifetime of the nearly degenerate molecular gas exceeds 100 ms in the vicinity of the Feshbach resonance. The measured dependence of the molecular binding energy on the magnetic field demonstrates the open-channel character of the molecules over a wide field range and implies significant singlet admixture. This will enable efficient transfer into the singlet vibrational ground state, resulting in a stable molecular Fermi gas with strong dipolar interactions.

APSAug 1, 20120 citations

Towards Creating Fermionic Ground State Molecules of

^{23}

^{40}

K with Strong Dipolar Interactions