Thermodynamics of an attractive 2D Fermi gas

Abstract

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 pressure equations of state for an attractive 2D Fermi gas in the normal phase as a function of temperature and interaction strength. In 2D, interacting gases exhibit qualitatively different features to those found in 3D. This is evident in the normalized density equation of state, which peaks at intermediate densities corresponding to the crossover from classical to quantum behaviour.

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References in corpus (15)

• Many-Body Physics with Ultracold Gases
• Attractive and repulsive Fermi polarons in two dimensions
• Radiofrequency spectroscopy of a strongly interacting two-dimensional Fermi gas
• Strong saturation absorption imaging of dense clouds of ultracold atoms
• Observation of a two-dimensional Fermi gas of atoms
• Observation of the Berezinskii-Kosterlitz-Thouless Phase Transition in an Ultracold Fermi Gas
• Observation of pair condensation in the quasi-2D BEC-BCS crossover
• Crossover from 2D to 3D in a weakly interacting Fermi gas
• Equation of State of Ultracold Fermions in the 2D BEC-BCS Crossover Region
• Pressure, compressibility, and contact of the two-dimensional attractive Fermi gas
• Exact few-body results for strongly correlated quantum gases in two dimensions
• Universal properties of Fermi gases in arbitrary dimensions
• Berezinskii-Kosterlitz-Thouless transition in trapped quasi-two-dimensional Fermi gas near a Feshbach resonance
• Conditions of Low Dimensionality for Strongly Interacting Atoms Under a Transverse Trap
• Quasi-two-dimensional Fermi gases at finite temperature

Cited by in corpus (79)

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• Goldstone mode and pair-breaking excitations in atomic Fermi superfluids
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• Quantum anomaly and 2D-3D crossover in strongly interacting Fermi gases
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• Reduced quantum anomaly in a quasi-2D Fermi superfluid: The significance of the confinement-induced effective range of interactions
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• The $s$-wave scattering length of a Gaussian potential
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• Dynamic density and spin responses of a superfluid Fermi gas in the BCS-BEC crossover: Path integral formulation and pair fluctuation theory
• Dimensional crossover of nonrelativistic bosons
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• Reaching the continuum limit in finite-temperature ab initio field-theory computations in many-fermion systems
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• Visualizing the BEC-BCS crossover in the two-dimensional Fermi gas: pairing gaps and dynamical response functions from ab initio computations
• Rashba spin-orbit coupling, strong interactions, and the BCS-BEC crossover in the ground state of the two-dimensional Fermi Gas
• Measuring pair correlations in Bose and Fermi gases via atom-resolved microscopy
• Measuring entropy and mutual information in the two-dimensional Hubbard model
• Leading gradient correction to the kinetic energy for two-dimensional fermion gases
• Vortices and antivortices in two-dimensional ultracold Fermi gases
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• Precision Many-Body Study of the Berezinskii-Kosterlitz-Thouless Transition and Temperature-Dependent Properties in the Two-Dimensional Fermi Gas
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• Dimensional crossover in a strongly interacting ultracold atomic Fermi gas
• Airy-averaged gradient corrections for two-dimensional fermion gases
• Effective theory for ultracold strongly interacting fermionic atoms in two dimensions
• In Situ Thermometry of Fermionic Cold-Atom Quantum Wires
• The virial expansion of attractively interacting Fermi gases in 1D, 2D, and 3D, up to fifth order
• Non-Perturbative Dynamical Effects in Nearly Scale Invariant Systems: The Action of Breaking Scale Invariance
• Thermodynamics and static response of anomalous 1D fermions via quantum Monte Carlo in the worldline representation
• Tan's contact and the phase distribution of repulsive Fermi gases: Insights from QCD noise analyses
• Universal Properties of Fermi Gases in One-dimension
• Breathing mode frequency of a strongly interacting Fermi gas across the 2D-3D dimensional crossover
• Effects of quantum fluctuations on the low-energy collective modes of two-dimensional superfluid Fermi gases from the BCS to the Bose Limit
• A Quantum Field-Theoretical Perspective on Scale Anomalies in 1D systems with Three-Body Interactions
• Josephson effect with superfluid fermions in the two-dimensional BCS-BEC crossover
• Fermions in Two Dimensions: Scattering and Many-Body Properties
• Harmonically trapped fermions in two dimensions: ground-state energy and contact of SU(2) and SU(4) systems via nonuniform lattice Monte Carlo
• Accurate projective two-band description of topological superfluidity in spin-orbit-coupled Fermi gases
• Pairing in two-dimensional Fermi gases with a coordinate-space potential
• Beyond Gaussian pair fluctuation theory for strongly interacting Fermi gases
• Renormalization of the superfluid density in the two-dimensional BCS-BEC crossover
• Role of the confinement-induced effective range on the thermodynamics of a strongly correlated Fermi gas in two dimensions
• Brueckner $G$-matrix approach to two-dimensional Fermi gases with the finite-range attractive interaction
• Dimensional crossover in ultracold Fermi gases from Functional Renormalisation
• Superfluidity and pairing phenomena in ultracold atomic Fermi gases in one-dimensional optical lattices, Part I: Balanced case
• Dynamical effects on superconductivity in BCS-BEC crossover
• Strong pairing in two dimensions: Pseudogaps, domes, and other implications
• Odd-parity effect and scale-dependent viscosity in atomic quantum gases
• Goldstone and Higgs Hydrodynamics in the BCS-BEC Crossover
• Hartree-Fock-Bogoliubov theory of trapped one-dimensional imbalanced Fermi systems
• Two-dimensional Fermi gas in antiparallel magnetic fields
• Advances in non-relativistic matter via complex Langevin approaches
• Pseudogap phenomena near the BKT transition of a two-dimensional ultracold Fermi gas in the crossover region
• Trapped imbalanced fermionic superfluids in one dimension: A variational approach
• Observing Spatial Charge and Spin Correlations in a Strongly-Interacting Fermi Gas
• Second-order virial expansion for an atomic gas in a harmonic waveguide
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• How to measure the free energy and partition function from atom-atom correlations
• The Ambiguity of Simplicity
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• Precision thermodynamics of the strongly interacting Fermi gas in two dimensions
• BCS-BEC crossover in a quasi-two-dimensional Fermi superfluid
• Renormalization group approach to the normal phase of 2D Fermi gases