• Corpus ID: 243848016

Ferromagnetism in tilted fermionic Mott insulators

@inproceedings{Takasan2021FerromagnetismIT,
  title={Ferromagnetism in tilted fermionic Mott insulators},
  author={Kazuaki Takasan and Masaki Tezuka},
  year={2021}
}
We investigate the magnetism in tilted fermionic Mott insulators. With a small tilt, the fermions are still localized and form a Mott-insulating state, where the localized spins interact via antiferromagnetic exchange coupling. While the localized state is naively expected to be broken with a large tilt, in fact, the fermions are still localized under a large tilt due to the Wannier-Stark localization and it can be regarded as a localized spin system. We find that the sign of the exchange… 

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