
Itinerant spin polarons, bound states of a dopant and a spin flip, are directly observed in a triangular-lattice Hubbard system realized with ultracold atoms, revealing enhanced antiferromagnetic correlations around hole dopants and ferromagnetic correlations around charge dopants.


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A triangular-lattice Hubbard system realized with ultracold atoms is used to directly image spin polarons, revealing ferromagnetic correlations around a charge dopant, a manifestation of the Nagaoka effect.

Directly imaging spin polarons in a kinetically frustrated Hubbard system - Nature

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Direct Observation of Itinerant Spin Polarons in a Kinetically Frustrated Hubbard System
