# Imaging magnetic polarons in the doped Fermi–Hubbard model

@article{Koepsell2019ImagingMP, title={Imaging magnetic polarons in the doped Fermi–Hubbard model}, author={Joannis Koepsell and Jayadev Vijayan and Pimonpan Sompet and Fabian Grusdt and Timon A Hilker and Eugene A. Demler and Guillaume Salomon and Immanuel Bloch and Christian Gross}, journal={Nature}, year={2019}, volume={572}, pages={358-362} }

Polarons—electronic charge carriers ‘dressed’ by a local polarization of the background environment—are among the most fundamental quasiparticles in interacting many-body systems, and emerge even at the level of a single dopant1. In the context of the two-dimensional Fermi–Hubbard model, polarons are predicted to form around charged dopants in an antiferromagnetic background in the low-doping regime, close to the Mott insulating state2–7; this prediction is supported by macroscopic transport…

## 70 Citations

Unbiased description of magnetic polarons in a Mott insulator

- Physics
- 2020

Polarons are among the most elementary quasiparticles of interacting quantum matter, consisting of a charge carrier dressed by an excited background. In Mott insulators, they take the form of a…

Dynamical interplay between a single hole and a Hubbard antiferromagnet

- Physics
- 2020

In strongly correlated quantum materials, the intricate interplay between charge carriers and spins leads to a breakdown of the conventional notion of charge transport. A prime example of such…

Microscopic spinon-chargon theory of magnetic polarons in the
t−J
model

- PhysicsPhysical Review B
- 2019

The interplay of spin and charge degrees of freedom, introduced by doping mobile holes into a Mott insulator with strong antiferromagnetic (AFM) correlations, is at the heart of strongly correlated…

Repulsive Fermi and Bose Polarons in Quantum Gases

- Physics
- 2022

Polaron quasiparticles are formed when a mobile impurity is coupled to the elementary excitations of a many-particle background. In the ﬁeld of ultracold atoms, the study of the associated impurity…

Microscopic evolution of doped Mott insulators from polaronic metal to Fermi liquid

- PhysicsScience
- 2021

A crossover in Fermi-Hubbard systems on a cold-atom quantum simulator is observed and the transformation of multipoint correlations between spins and holes upon increasing doping at temperatures around the superexchange energy is revealed.

Rotational Resonances and Regge-like Trajectories in Lightly Doped Antiferromagnets.

- PhysicsPhysical review letters
- 2021

A rotational variant of angle-resolved photo-emission spectroscopy (ARPES) is proposed and long-lived rotational resonances for an individual dopant are identified, which are interpreted as a direct indicator of the microscopic structure of spinon-chargon bound states.

Strong pairing in mixed-dimensional bilayer antiferromagnetic Mott insulators

- PhysicsNature Physics
- 2022

Interacting many-body systems in reduced-dimensional settings, such as ladders and few-layer systems, are characterized by enhanced quantum fluctuations. Recently, two-dimensional bilayer systems…

Spin-Mediated Mott Excitons

- Physics
- 2020

Motivated by recent experiments on Mott insulators, in both iridates and ultracold atoms, we theoretically study the effects of magnetic order on the Mott-Hubbard excitons. In particular, we focus on…

Dynamical formation of a magnetic polaron in a two-dimensional quantum antiferromagnet

- PhysicsNew Journal of Physics
- 2020

We numerically study the real-time dynamics of a single hole created in the $t-J$ model on a square lattice. Initially, the hole spreads ballistically with a velocity proportional to the hopping…

Fate of pairing and spin-charge separation in the presence of long-range antiferromagnetism

- PhysicsPhysical Review B
- 2022

We present a numerical study of competing orders in the 1D t-J model with long-range RKKY-like staggered spin interactions. By circumventing the constraints imposed by Mermin-Wagner’s theorem, this…

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