Abstract
We Unravel The Dynamical Stability Of A Fully Polarized One-Dimensional Ultracold Few-Fermion Spin-1/2 Gas Subjected To Inhomogeneous Driving Of The Itinerant Spins. Despite The Unstable Character Of The Total Spin-Polarization The Existence Of An Interaction Regime Is Demonstrated Where The Spin-Correlations Lead To Almost Maximally Aligned Spins Throughout The Dynamics. The Resulting Ferromagnetic Order Emerges From The Build Up Of Superpositions Of States Of Maximal Total Spin. They Comprise A Decaying Spin-Polarization And A Dynamical Evolution Towards An Almost Completely Unpolarized NOON-Like State. Via Single-Shot Simulations We Demonstrate That Our Theoretical Predictions Can Be Detected In State-Of-The-Art Ultracold Experiments.
Recommended Citation
G. M. Koutentakis et al., "Probing Ferromagnetic Order In Few-Fermion Correlated Spin-Flip Dynamics," New Journal of Physics, vol. 21, no. 5, article no. 053005, IOP Publishing, May 2019.
The definitive version is available at https://doi.org/10.1088/1367-2630/ab14ba
Department(s)
Physics
Publication Status
Open Access
Keywords and Phrases
ferromagnetism; few-body systems; out-of-equillibrium dynamics; quantum gases; quantum magnetism; ultracold fermions
International Standard Serial Number (ISSN)
1367-2630
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2024 The Authors, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution 4.0 License.
Publication Date
06 May 2019
Comments
Deutsche Forschungsgemeinschaft, Grant EXC 2056