Spontaneous demagnetization of a dipolar spinor Bose gas at ultra-low magnetic field

Details Spontaneous demagnetization of a dipolar spinor Bose gas at ultra-low magnetic field Spontaneous demagnetization of a dipolar spinor Bose gas at ultra-low magnetic field

2011-03-24

arxiv.org/abs/1103.4819v1

Physics

Condensed Matter

Quantum Gases

6 pages, 4 figures, 2 appendices

Scientific paper

Quantum degenerate Bose gases with an internal degree of freedom, known as spinor condensates, are natural candidates to study the interplay between magnetism and superfluidity. In the spinor condensates made of alkali atoms studied so far, the spinor properties are set by contact interactions, while magnetization is dynamically frozen, due to small magnetic dipole-dipole interactions. Here, we study the spinor properties of S=3 $^{52}$Cr atoms, in which relatively strong dipole-dipole interactions allow changes in magnetization. We observe a phase transition between a ferromagnetic phase and an unpolarized phase when the magnetic field is quenched to an extremely low value, below which interactions overwhelm the linear Zeeman effect. The BEC magnetization changes due to magnetic dipole-dipole interactions that set the dynamics. Our work opens up the experimental study of quantum magnetism with free magnetization using ultra-cold atoms.

Affiliated with

Also associated with

No associations

Rating

Spontaneous demagnetization of a dipolar spinor Bose gas at ultra-low magnetic field does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Spontaneous demagnetization of a dipolar spinor Bose gas at ultra-low magnetic field, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spontaneous demagnetization of a dipolar spinor Bose gas at ultra-low magnetic field will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-48037