262 citations · 536 across the 30 of their papers we have counts for
32 papers
Attraction from repulsion in an interacting Chern band: chiral superconductivity, generalized Hall crystals, and competing fractional Chern insulators
Fabian Pichler, Clemens Kuhlenkamp, Ashvin Vishwanath +1
Experiments realizing strong interactions in partially filled Chern bands have observed fractional Chern insulators (FCIs), superconductors, and topological crystals in close proxi…
Out-of-equilibrium spin-valley dynamics of ferromagnets in topological Chern bands
J. James, I. Krastilevskiy, F. Pichler +8
Understanding quantum matter far from equilibrium is a central goal of modern physics. Twisted MoTe2 bilayers constitute a promising platform for exploring this frontier by combini…
Detecting Exciton Condensation through Charge Transport in Semiconductor Heterostructures
Caterina Zerba, Léo Mangeolle, Michael Knap
Direct evidence of exciton condensation in semiconductor heterostructures remains elusive. Here we propose charge transport of doped carriers as a probe of exciton condensation in…
Tensor network study of deconfined quantum criticality in a one-dimensional spin-phonon model
Anton Romen, Josef Willsher, David Hofmeier +2
Deconfined quantum critical points (DQCPs) describe continuous transitions between ordered phases beyond the Landau paradigm. A simple example is the Néel antiferromagnet (AFM) to…
Generalized Hydrodynamics of Bloch Oscillations in the Absence of a Lattice
Stefano Scopa, Philip Zechmann, Michael Knap +2
Objects subjected to a constant force generally increase their velocity over time. This expectation fails whenever their energy is a smooth and periodic function of momentum, resul…
Fractionalization from Kinetic Frustration in Doped Two-Dimensional SU(4) Quantum Magnets
Wilhelm Kadow, Ivan Morera, Eugene Demler +1
Separating electrons into emergent fractional quasiparticles is a hallmark of exotic quantum phases of matter with strong interactions. Understanding under which circumstances frac…
Electromagnetic Response of a Half-Filled Chern Band near Topological Criticality
Xinlei Yue, Fabian Pichler, Michael Knap +1
We evaluate electromagnetic-response observables in a half-filled Chern band, across a topological phase transition between a composite Fermi liquid (CFL) and a Fermi liquid (FL) p…
False Vacuum Decay in Flat-Band Ferromagnets: Role of Quantum Geometry and Chiral Edge States
Fabian Pichler, Clemens Kuhlenkamp, Michael Knap
Dynamical control of quantum matter is a challenging, yet promising direction for probing strongly correlated states. Motivated by recent experiments in twisted MoTe that demon…
Lessons from -RuCl3 for pursuing quantum spin liquid physics in atomically thin materials
Claudia Ojeda-Aristizabal, Xiaohu Zheng, Changsong Xu +20
Quantum spin liquids can arise from Kitaev magnetic interactions, and exhibit fractionalized excitations with the potential for a topological form of quantum computation. This revi…
Transient localization from fractionalization: vanishingly small heat conductivity in gapless quantum magnets
Shi Feng, Penghao Zhu, Johannes Knolle +1
Several candidate materials for gapless quantum spin liquids exhibit a vanishing thermal conductivity, which is at odds with theoretical predictions. Here, we show that a suppresse…
Microscopic Mechanism of Anyon Superconductivity Emerging from Fractional Chern Insulators
Fabian Pichler, Clemens Kuhlenkamp, Michael Knap +1
Fractional quantum Hall (FQH) states and superconductors typically require contrasting conditions, yet recent experiments have observed them in the same device. A natural explanati…
Theory of Angle Resolved Photoemission Spectroscopy of Altermagnetic Mott Insulators
Lorenzo Lanzini, Purnendu Das, Michael Knap
Altermagnetism has emerged as an unconventional form of collinear magnetism with spatial rotational symmetries, that give rise to strongly spin-split bands despite of an underlying…
Purely electronic model for exciton-polaron formation in moiré heterostructures
Fabian Pichler, Mohammad Hafezi, Michael Knap
Understanding interactions between excitons and correlated electronic states presents a fundamental challenge in quantum many-body physics. Here, we introduce a purely electronic m…
Theory of Nonlinear Spectroscopy of Quantum Magnets
Anubhav Srivastava, Stefan Birnkammer, GiBaik Sim +2
Two-dimensional coherent spectroscopy (2DCS) is an established method for characterizing molecules and has been proposed in the THz regime as a new tool for probing exotic excitati…
Fractionalized Prethermalization in the One-Dimensional Hubbard Model
Anton Romen, Johannes Knolle, Michael Knap
Prethermalization phenomena in driven systems are generally understood via a local Floquet Hamiltonian obtained from a high-frequency expansion. Remarkably, recently it has been sh…
Gate-tunable Bose-Fermi mixture in a strongly correlated moiré bilayer electron system
Amine Ben Mhenni, Wilhelm Kadow, Mikołaj J. Metelski +9
Quantum gases consisting of species with distinct quantum statistics, such as Bose-Fermi mixtures, can behave in a fundamentally different way than their unmixed constituents. This…
Emergent Fracton Hydrodynamics of Ultracold Atoms in Partially Filled Landau Levels
Caterina Zerba, Alexander Seidel, Frank Pollmann +1
The realization of synthetic gauge fields for charge neutral ultracold atoms and the simulation of quantum Hall physics has witnessed remarkable experimental progress. Here, we est…
Single-particle spectral function of fractional quantum anomalous Hall states
Fabian Pichler, Wilhelm Kadow, Clemens Kuhlenkamp +1
Fractional quantum Hall states are the most prominent example of states with topological order, hosting excitations with fractionalized charge. Recent experiments in twisted $\text…
Scattering Theory of Chiral Edge Modes in Topological Magnon Insulators
Stefan Birnkammer, Michael Knap, Johannes Knolle +2
Topological magnon insulators exhibit robust edge modes with chiral properties similar to quantum Hall edge states. However, due to their strong localization at the edges, interact…
Giant enhancement of exciton diffusion near an electronic Mott insulator
Pranshoo Upadhyay, Daniel G. Suárez-Forero, Tsung-Sheng Huang +9
Bose-Fermi mixtures naturally appear in various physical systems. In semiconductor heterostructures, such mixtures can be realized, with bosons as excitons and fermions as dopant c…
Tuning transport in solid-state Bose-Fermi mixtures by Feshbach resonances
Caterina Zerba, Clemens Kuhlenkamp, Léo Mangeolle +1
Transition metal dichalcogenide (TMD) heterostructures have emerged as promising platforms for realizing tunable Bose-Fermi mixtures. Their constituents are fermionic charge carrie…
Probing magnetism in moiré heterostructures with quantum twisting microscopes
Fabian Pichler, Wilhelm Kadow, Clemens Kuhlenkamp +1
Spin-ordered states close to metal-insulator transitions are poorly understood theoretically and challenging to probe in experiments. Here, we propose that the quantum twisting mic…
Realizing Altermagnetism in Fermi-Hubbard Models with Ultracold Atoms
Purnendu Das, Valentin Leeb, Johannes Knolle +1
Altermagnetism represents a type of collinear magnetism, that is in some aspects distinct from ferromagnetism and from conventional antiferromagnetism. In contrast to the latter, s…
Deconfinement Dynamics of Fractons in Tilted Bose-Hubbard Chains
Julian Boesl, Philip Zechmann, Johannes Feldmeier +1
Fractonic constraints can lead to exotic properties of quantum many-body systems. Here, we investigate the dynamics of fracton excitations on top of the ground states of a one-dime…