Radiofrequency spectroscopy of ${}^6$Li p-wave molecules: towards photoemission spectroscopy of a p-wave superfluid

Abstract

Understanding superfluidity with higher order partial waves is crucial for the understanding of high-$T_c$ superconductivity. For the realization of a superfluid with anisotropic order parameter, spin-polarized fermionic lithium atoms with strong p-wave interaction are the most promising candidates to date. We apply rf-spectroscopy techniques that do not suffer from severe final-state effects \cite{Perali08} with the goal to perform photoemission spectroscopy on a strongly interacting p-wave Fermi gas similar to that recently applied for s-wave interactions \cite{Stewart08}. Radiofrequency spectra of both quasibound p-wave molecules and free atoms in the vicinity of the p-wave Feshbach resonance located at 159.15\,G \cite{Schunck05} are presented. The observed relative tunings of the molecular and atomic signals in the spectra with magnetic field confirm earlier measurements realized with direct rf-association \cite{Fuchs08}. Furthermore, evidence of bound molecule production using adiabatic ramps is shown. A scheme to observe anisotropic superfluid gaps, the most direct proof of p-wave superfluidity, with 1d-optical lattices is proposed.

5 pages, 3 figures

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• Using photoemission spectroscopy to probe a strongly interacting Fermi gas
• Quantum phase transitions across p-wave Feshbach resonance
• Precision Measurements of Collective Oscillations in the BEC-BCS Crossover
• P-wave Feshbach resonances of ultra-cold ${}^6$Li
• Feshbach Resonances in Fermionic Lithium-6
• p-wave Feshbach molecules
• Quantum-degenerate mixture of fermionic lithium and bosonic rubidium gases
• Collisional Properties of p-Wave Feshbach Molecules
• Binding Energies of 6Li p-wave Feshbach Molecules
• BCS-BEC crossover in a gas of Fermi atoms with a p-wave Feshbach resonance
• Quantum Phase Transition in the BCS-to-BEC Evolution of p-wave Fermi Gases
• Evolution from BCS to BEC superfluidity in p-wave Fermi gases
• Strongly-resonant p-wave superfluids
• Resonant scattering properties close to a p-wave Feshbach resonance
• Competition between final-state and pairing-gap effects in the radio-frequency spectra of ultracold Fermi atoms
• Superfluidity of p-wave and s-wave atomic Fermi gases in optical lattices
• Trapped p-wave superfluids: a local density approach

Cited by in corpus (24)

• Experimental Determination of p-wave Scattering Parameters in ultracold 6Li atoms
• Splitting and oscillation of Majorana zero modes in the p-wave BCS-BEC evolution with plural vortices
• Confinement-induced p-wave resonances from s-wave interactions
• Collisional loss of one-dimensional fermions near a $p$-wave Feshbach resonance
• Scaling Law for Three-body Collisions in Identical Fermions with $p$-wave Interactions
• Observation of dipolar splittings in high-resolution atom-loss spectroscopy of ${}^6$Li $p$-wave Feshbach resonances
• The scattering amplitude of ultracold atoms near the p-wave magnetic Feshbach Resonance
• High temperature thermodynamics of strongly interacting s-wave and p-wave Fermi gases in a harmonic trap
• Nanoplasmonic planar traps - a tool for engineering p-wave interactions
• Creation of p-wave Feshbach molecules in the selected angular momentum states using an optical lattice
• Pairing fluctuations and anisotropic pseudogap phenomenon in an ultracold superfluid Fermi gas with plural $p$-wave superfluid phases
• Strong-Coupling and Finite Temperature Effects on $p$-wave Contacts
• Proposed method to realize the $p$-wave superfluid state using a $s$-wave superfluid Fermi gas with a synthetic spin-orbit interaction
• Dip-hump temperature dependence of Specific Heat and Effects of Pairing Fluctuations in the Weak-coupling Side of a $p$-wave Interacting Fermi Gas
• Strong-coupling Properties of a $p$-wave Interacting Fermi Gas on the Viewpoint of Specific Heat at Constant Volume
• Rashbon bound states associated with a spherical spin-orbit coupling in an ultracold Fermi gas with an $s$-wave interaction
• Many-body dynamics of p-wave Feshbach molecule production: a mean-field approach
• Pairing properties of an odd-frequency superfluid Fermi gas
• Specific Heat and Effects of Uniaxial Anisotropy of a $p$-wave Pairing Interaction in a Strongly Interacting Ultracold Fermi Gas
• Fate of thermalization of ultracold fermions with two-body dissipation
• Topological phase transitions on a triangular optical lattice with non-Abelian gauge fields
• The effect of anisotropic exchange interactions and short-range phenomena on superfluidity in a homogeneous dipolar Fermi gas
• Shear Viscosity in the Strong Interaction Regime of a p-wave Superfluid Fermi Gas
• Elastic collision rates of spin-polarized fermions in two dimensions