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.
- Received 17 August 2015
DOI:https://doi.org/10.1103/PhysRevLett.116.045302
© 2016 American Physical Society
Physics Subject Headings (PhySH)
Viewpoint
Journey from Classical to Quantum in Two Dimensions
Published 27 January 2016
Two separate groups have extracted the thermodynamic equation of state for a two-dimensional gas of fermionic atoms, revealing its peculiar quantum features.
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