Antiferromagnetism with Ultracold Atoms

Abstract

We use ultracold spin--1/2 atomic fermions (${}^6$Li) to realize the Hubbard model on a three-dimensional (3D) optical lattice. At relatively high temperatures and at densities near half-filling, we show that the gas forms a Mott insulator with unordered spins. To observe antiferromagnetic order that is predicted to occur at lower temperatures, we developed the compensated optical lattice method to evaporatively cool atoms in the lattice. This cooling has enabled the detection of short-range magnetic order by spin-sensitive Bragg scattering of light.

To be published in the Proceedings of the 22nd International Conference on Laser Spectroscopy (Singapore, 2015)

References in corpus (5)

• Many-Body Physics with Ultracold Gases
• Observation of antiferromagnetic correlations in the Hubbard model with ultracold atoms
• Short-range quantum magnetism of ultracold fermions in an optical lattice
• Compressibility of a fermionic Mott insulator of ultracold atoms
• Enlarging and cooling the Néel state in an optical lattice

Cited by in corpus (1)

• Magnetic Correlations in the Two-dimensional Repulsive Fermi Hubbard Model