Directly imaging spin polarons in a kinetically frustrated Hubbard system

ML Prichard, BM Spar, I Morera, E Demler, ZZ Yan… - Nature, 2024 - nature.com
The emergence of quasiparticles in quantum many-body systems underlies the rich
phenomenology in many strongly interacting materials. In the context of doped Mott …

Realizing altermagnetism in fermi-hubbard models with ultracold atoms

P Das, V Leeb, J Knolle, M Knap - Physical Review Letters, 2024 - APS
Altermagnetism represents a type of collinear magnetism, that is in some aspects distinct
from ferromagnetism and from conventional antiferromagnetism. In contrast to the latter …

Single-hole spectra of Kitaev spin liquids: from dynamical Nagaoka ferromagnetism to spin-hole fractionalization

W Kadow, HK Jin, J Knolle, M Knap - npj Quantum Materials, 2024 - nature.com
The dynamical response of a quantum spin liquid upon injecting a hole is a pertinent open
question. In experiments, the hole spectral function, measured momentum-resolved in angle …

Kinetic-to-magnetic frustration crossover and linear confinement in the doped triangular model

H Schlömer, U Schollwöck, A Bohrdt, F Grusdt - Physical Review B, 2024 - APS
Microscopically understanding competing orders in strongly correlated systems is a key
challenge in modern quantum many-body physics. For example, the study of magnetic …

Itinerant ferromagnetism in transition metal dichalcogenide moiré superlattices

P Potasz, N Morales-Durán, NC Hu, AH MacDonald - Physical Review B, 2024 - APS
Moiré materials are artificial crystals formed at van der Waals heterojunctions that have
emerged as a highly tunable platform that is able to realize much of the rich quantum …

[PDF][PDF] Exploring kinetically induced bound states in triangular lattices with ultracold atoms: spectroscopic approach

I Morera, C Weitenberg, K Sengstock… - Preprint at https://arxiv. org …, 2023 - scipost.org
Quantum simulations with ultracold fermions in triangular optical lattices have recently
emerged as a new platform for studying magnetism in frustrated systems. Experimental …

Itinerant magnetism and magnetic polarons in the triangular lattice Hubbard model

I Morera, E Demler - arXiv preprint arXiv:2402.14074, 2024 - arxiv.org
We use density matrix renormalization group to investigate the phase diagram of the Fermi
Hubbard model on a triangular lattice with densities above half-filling, $1\leq n< 2$. We …

Polaronic mechanism of Nagaoka ferromagnetism in Hubbard models

R Samajdar, RN Bhatt - Physical Review B, 2024 - APS
The search for elusive Nagaoka-type ferromagnetism in the Hubbard model has recently
enjoyed renewed attention with the advent of a variety of experimental platforms enabling its …

Observation of chiral-mode domains in a frustrated XY model on optical triangular lattices

H Ozawa, R Yamamoto, T Fukuhara - Physical Review Research, 2023 - APS
We investigated the relaxation and excitation in a frustrated XY model realized by a Bose
gas in Floquet-engineered optical triangular lattices. Periodically driving the position of the …

Structural complexity of snapshots of 2D Fermi-Hubbard systems

E Ibarra-García-Padilla, S Striegel, RT Scalettar… - arXiv preprint arXiv …, 2023 - arxiv.org
The development of quantum gas microscopy for two-dimensional optical lattices has
provided an unparalleled tool to study the Fermi-Hubbard model (FHM) with ultracold atoms …