University of Cambridge > Talks.cam > AMOP list > Few-fermion quantum systems: How may are many?

Few-fermion quantum systems: How may are many?

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact pjh65.

In our experiments we deterministically prepare ultracold ensembles of 1-10 fermionic Lithium-6 atoms in two different spin states. We tune the interparticle interaction using Feshbach resonances and trap the atoms in a quasi 1-dimensional optical potential. In my talk I will present results obtained with a strongly imbalanced sample, for which we prepare a mixture of one single minority spin down particle embedded in a sample of 1-5 majority spin up atoms, and measure the interaction energy as a function of particle number and repulsive interaction strength. We observe that this energy very quickly converges to the many particle limit in one dimension. If we tune the repulsion beyond infinity we find ferromagnetic correlations, and thus realize the Stoner model of itinerant ferromagnetism in a finite system.

This talk is part of the AMOP list series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.

 

© 2006-2022 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity