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Goldstone mode and pair-breaking excitations in atomic Fermi superfluids
Bragg spectroscopy shows the evolution of gapless Goldstone modes and single-particle-like excitations in an atomic Fermi superfluid as it crosses from a Bardeen–Cooper–Schrieffer superfluid to the… Expand
Thermodynamics of an Attractive 2D Fermi Gas.
Thermodynamic properties of matter are conveniently expressed as functional relations between variables known as equations of state. Here we experimentally determine the compressibility, density, and… Expand
Criteria for two-dimensional kinematics in an interacting Fermi gas
Ultracold Fermi gases subject to tight transverse confinement offer a highly controllable setting to study the two-dimensional (2D) BCS to Berezinskii-Kosterlitz-Thouless superfluid crossover.… Expand
Experimental realization of a two-dimensional synthetic spin-orbit coupling in ultracold Fermi gases
Though significant experimental progresses have been made, a bottleneck in current studies is the lack of a two-dimensional (2D) synthetic SOC, which is crucial for realizing high-dimensional… Expand
Crossover from 2D to 3D in a weakly interacting Fermi gas.
We have studied the transition from two to three dimensions in a low temperature weakly interacting 6Li Fermi gas. Below a critical atom number N(2D) only the lowest transverse vibrational state of a… Expand
Dynamic spin response of a strongly interacting Fermi gas.
We present an experimental investigation of the dynamic spin response of a strongly interacting Fermi gas using Bragg spectroscopy. By varying the detuning of the Bragg lasers, we show that it is… Expand
Low-lying excitations in a strongly interacting Fermi gas
Precise determination of the structure factor and contact in a unitary Fermi gas.
- S. Hoinka, M. Lingham, +4 authors S. Gandolfi
- Physics, Medicine
- Physical review letters
- 18 September 2012
We present a high-precision determination of the universal contact parameter in a strongly interacting Fermi gas. In a trapped gas at unitarity, we find the contact to be 3.06±0.08 at a temperature… Expand
Contact and Sum Rules in a Near-Uniform Fermi Gas at Unitarity.
We present an experimental study of the high-energy excitation spectra of unitary Fermi gases. Using focused beam Bragg spectroscopy, we locally probe atoms in the central region of a harmonically… Expand
Local observation of pair condensation in a Fermi gas at unitarity.
We present measurements of the local (homogeneous) density-density response function of a Fermi gas at unitarity using spatially resolved Bragg spectroscopy. By analyzing the Bragg response across… Expand