149 citations · 1.2k across the 28 of their papers we have counts for
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Atomistic theory of moiré Hofstadter's butterfly in magic-angle graphene
Alina Wania Rodrigues, Maciej Bieniek, Paweł Potasz +4
We present here a Hofstadter's butterfly spectrum for the magic angle twisted bilayer graphene obtained using an ab initio based multi-million atom tight-binding model. We incorpor…
Itinerant ferromagnetism in transition metal dichalcogenides moiré superlattices
Pawel Potasz, Nicolás Morales-Durán, Nai Chao Hu +1
Moiré materials are artificial crystals formed at van der Waals heterojunctions that have emerged as a highly tunable platform to realize much of the rich quantum physics of electr…
Magnetism and Quantum Melting in Moiré-Material Wigner Crystals
Nicolás Morales-Durán, Pawel Potasz, Allan H. MacDonald
Recent experiments have established that semiconductor-based moiré materials can host incompressible states at a series of fractional moiré-miniband fillings. These states have bee…
Magnetic properties of moiré quantum dot arrays
Weronika Pasek, Michał Kupczyński, Paweł Potasz
We investigate magnetic properties of quantum dot arrays of moiré triangular superlattices. Starting from a reciprocal space model, we use the projection technique to obtain maxima…
DMRG and Monte Carlo studies of magnetic phases and the phase transition
Bartosz Rzepkowski, Michał Kupczyński, Paweł Potasz +1
The monolayer of has been reported to exhibit the ferromagnetic order, with a Curie temperature of and off-plane easy axis, which has attracted much attenti…
Non-local interactions in moiré Hubbard systems
Nicolás Morales-Durán, Nai Chao Hu, Pawel Potasz +1
Moiré materials formed in two-dimensional semiconductor heterobilayers are quantum simulators of Hubbard-like physics with unprecedented electron-density and interaction-strength t…
Exact Diagonalization for Magic-Angle Twisted Bilayer Graphene
Pawel Potasz, Ming Xie, Allan H. MacDonald
We report on finite-size exact-diagonalization calculations in a Hilbert space defined by the continuum-model flat moiré bands of magic angle twisted bilayer graphene (MATBG). For…
Metal-insulator transition in transition metal dichalcogenide heterobilayer moiré superlattices
Nicolás Morales-Durán, Pawel Potasz, Allan H. MacDonald
Moiré superlattices formed in two-dimensional semiconductor heterobilayers provide a new realization of Hubbard model physics in which the number of electrons per effective atom ca…
Interband excitations in the 1D limit of two-band fractional Chern insulators
Błażej Jaworowski, Piotr Kaczmarkiewicz, Paweł Potasz +1
We investigate the stability of the one-dimensional limit of Laughlin-like fractional Chern insulator with respect to the interband interaction. We propose a construction f…
Wigner crystallization in topological flat bands
Błażej Jaworowski, Alev Devrim Güçlü, Piotr Kaczmarkiewicz +3
We study the Wigner crystallization on partially filled topological flat bands. We identify the Wigner crystals by analyzing the cartesian and angular Fourier transform of the pair…
Topological phase transitions in Chern insulators within three-band models
P. Potasz, B. Jaworowski, M. Kupczyński +3
We investigate topological phase transitions in Chern insulators within three-band models, focusing on the empty band and lowest band populated by spinless fermions. We consider Li…
Fractional Chern Insulator phase at the transition between checkerboard and Lieb lattice
Błażej Jaworowski, Paweł Potasz, Andrei Manolescu
The stability of Fractional Chern Insulator (FCI) phase is analysed on the example of checkerboard lattice undergoing a transition into Lieb lattice. The transition is perf…