Control of ultracold atoms with a chiral ferromagnetic film
Ren Qin, Yong Wang
We show that the magnetic field produced by a chiral ferromagnetic film can be applied to control ultracold atoms. The film will act as a magnetic mirror or a reflection grating for ultracold atoms when it is in the helical phase or the skyrmion crystal phase, respectively. By applying a bias magnetic field and a time-dependent magnetic field, one-dimensional or two-dimensional magnetic lattices including honeycomb, Kagome, and triangular types can be created to trap the ultracold atoms. We have also discussed the trapping height, the potential barrier, the trapping frequency, and the Majorana loss rate for each lattice. Our results suggest that the chiral ferromagnetic film can be a platform to develop artificial quantum systems with ultracold atoms based on modern spintronics technologies.
arXiv:1807.05647•Physical Review A•Jan 2, 2019•2 citations