title: 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 behavior.
authors.affiliation: Centre for Quantum and Optical Sciences, Swinburne University of Technology, Melbourne 3122, Australia.
authors.forename: K
authors.initials: K
authors.lastname: Fenech
authors.affiliation: Centre for Quantum and Optical Sciences, Swinburne University of Technology, Melbourne 3122, Australia.
authors.forename: P
authors.initials: P
authors.lastname: Dyke
authors.affiliation: Centre for Quantum and Optical Sciences, Swinburne University of Technology, Melbourne 3122, Australia.
authors.forename: T
authors.initials: T
authors.lastname: Peppler
authors.affiliation: Centre for Quantum and Optical Sciences, Swinburne University of Technology, Melbourne 3122, Australia.
authors.forename: M G
authors.initials: MG
authors.lastname: Lingham
authors.affiliation: Centre for Quantum and Optical Sciences, Swinburne University of Technology, Melbourne 3122, Australia.
authors.forename: S
authors.initials: S
authors.lastname: Hoinka
authors.affiliation: Centre for Quantum and Optical Sciences, Swinburne University of Technology, Melbourne 3122, Australia.
authors.forename: H
authors.initials: H
authors.lastname: Hu
authors.affiliation: Centre for Quantum and Optical Sciences, Swinburne University of Technology, Melbourne 3122, Australia.
authors.forename: C J
authors.initials: CJ
authors.lastname: Vale