Thermodynamics of a Bose Einstein condensate with free magnetization

Abstract

We study thermodynamic properties of a gas of spin 3 52Cr atoms across Bose Einstein condensation. Magnetization is free, due to dipole-dipole interactions (DDIs). We show that the critical temperature for condensation is lowered at extremely low magnetic fields, when the spin degree of freedom is thermally activated. The depolarized gas condenses in only one spin component, unless the magnetic field is set below a critical value, below which a non ferromagnetic phase is favored. Finally we present a spin thermometry efficient even below the degeneracy temperature.

4 pages, 4 figures

References in corpus (12)

• Spontaneous symmetry breaking in a quenched ferromagnetic spinor Bose condensate
• All-Optical Production of Chromium Bose-Einstein Condensates
• Spinor Dynamics in an Antiferromagnetic Spin-1 Condensate
• Spin gradient demagnetization cooling of ultracold atoms
• Spin gradient thermometry for ultracold atoms in optical lattices
• Spontaneous demagnetization of a dipolar spinor Bose gas at ultra-low magnetic field
• Magnetically tuned spin dynamics resonance
• Observation of deviations from ideal gas thermodynamics in a trapped Bose-Einstein condensed gas
• Effects of Interactions on the Critical Temperature of a Trapped Bose Gas
• Control of dipolar relaxation in external fields
• Spinor condensates with a laser-induced quadratic Zeeman effect
• Accumulation of chromium metastable atoms into an Optical Trap

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• Dipolar physics: A review of experiments with magnetic quantum gases
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• Liquid quantum droplets of ultracold magnetic atoms
• Phase diagram of spin 1 antiferromagnetic Bose-Einstein condensates
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• Simulating quantum magnets with symmetric top molecules
• Generating mesoscopic Bell states via collisions of distinguishable quantum bright solitons
• Long-range interactions between polar alkali-metal diatoms in external electric fields
• Resonant demagnetization of a dipolar BEC in a 3D optical lattice
• The approach to chaos in ultracold atomic and molecular physics: statistics of near-threshold bound states for Li+CaH and Li+CaF
• Dipole-dipole interactions in optical lattices do not follow an inverse cube power law
• Stepwise Bose-Einstein condensation in a spinor gas
• Competition between Bose Einstein Condensation and spin dynamics
• Fluctuation-induced and symmetry-prohibited metastabilities in spinor Bose-Einstein condensates
• Thermodynamic properties of rotating trapped ideal Bose gases
• An Effective Potential Theory for Transport Coefficients Across Coupling Regimes
• Spin Hall Effect in a Spinor Dipolar Bose-Einstein Condensate
• Many Bosons in a Narrow Magnetic Feshbach Resonance
• Thermodynamics of a spin-1 Bose gas with fixed magnetization
• Mesoscopic dipolar quantum crystals
• Polar Phase of 1D Bosons with Large Spin
• Cooling of a Bose-Einstein Condensate by spin distillation
• Fractional-charge vortex in a spinor Bose-Einstein condensate
• Spin 1 condensates at thermal equilibrium : a $SU(3)$ coherent state approach
• Thermal spin fluctuations in spinor Bose-Einstein condensates
• Near-threshold bound states of the dipole-dipole interaction
• Cooling All External Degrees of Freedom of Optically Trapped Chromium Atoms Using Gray Molasses
• Thermal effects on the spin domain phases of high spin-f Bose-Einstein condensates with rotational symmetries
• Anisotropic merging and splitting of dipolar Bose-Einstein condensates