University of Cambridge > Talks.cam > AMOP list > Quantum magnetism of ultracold fermions in an optical lattice

Quantum magnetism of ultracold fermions in an optical lattice

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

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

We report on the observation of short-range quantum magnetic correlations of fermionic atoms in an optical lattice. The key to entering the regime of quantum magnetism is a tunable geometry optical lattice, which allows us to locally redistribute the entropy. When loading a low-temperature two-component gas with repulsive interactions into either a dimerized or anisotropic simple cubic lattice, we find magnetic correlations on neighbouring sites. The correlations manifest as an excess number of singlets as compared to triplets consisting of two atoms with opposite spins. For the anisotropic lattice, we determine the transverse spin correlator from the singlet-triplet imbalance and observe antiferromagnetic correlations along one spatial axis. I will further report on experiments in which we have created cold-atom analogues of mesoscopic conductors and superconductors

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