2014/06/18 by Ch. Grenier, Charles Grenier, Antoine Georges +1
Physics and Astronomy · #Atomic physics #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Electron #Evaporative cooler #Fermi Gamma-ray Space Telescope #Fermi gas #Materials science #Nuclear physics #Physics #Physics of Superconductivity and Magnetism #Quantum #Quantum mechanics #Quantum, superfluid, helium dynamics #Superfluidity #Thermodynamics #Thermoelectric cooling #Thermoelectric effect #cond-mat.mes-hall #cond-mat.quant-gas
paper · pdf · doi:10.1103/physrevlett.113.200601
published as Phys. Rev. Lett. 113, 200601 (2014) (Editor's suggestion) · 7 pages (including supplementary information), 4 figures
arxiv created 2014/06/18 · openalex publication_date 2014/11/12 · arxiv updated 2015/02/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We propose a cooling scheme for fermionic quantum gases, based on the principles of the Peltier thermoelectric effect and energy filtering. The system to be cooled is connected to another harmonically trapped gas acting as a reservoir. The cooling is achieved by two simultaneous processes: (i) the system is evaporatively cooled, and (ii) cold fermions from deep below the Fermi surface of the reservoir are injected below the Fermi level of the system, in order to fill the "holes" in the energy distribution. This is achieved by a suitable energy dependence of the transmission coefficient connecting the system to the reservoir. The two processes can be viewed as simultaneous evaporative cooling of particles and holes. We show that both a significantly lower entropy per particle and faster cooling rate can be achieved in this way than by using only evaporative cooling.