Remote imprinting of moiré lattices

Nature Materials, Journal Year: 2024, Volume and Issue: 23(2), P. 219 - 223

Published: Jan. 4, 2024

Language: Английский

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Chiral Pseudospin Liquids in Moiré Heterostructures

Physical Review X, Journal Year: 2024, Volume and Issue: 14(2)

Published: April 19, 2024

We propose multilayer moiré structures in strong external magnetic fields as a novel platform for realizing highly tunable, frustrated Hubbard physics with topological order. Identifying the layer degree of freedom pseudospin allows us to retain SU(2) symmetry while controlling ring-exchange processes and concurrently quenching kinetic energy by large fields. This way, broad class interacting Hubbard-Hofstadter states their transitions can be studied. Remarkably, limit interactions system becomes Mott insulating we find chiral pseudospin-liquid phases which are induced field. that this topologically ordered state remains exceptionally stable toward relevant perturbations. discuss how probed near-term experiments. As flux easily tuned systems, our approach provides promising route experimental realization control matter. Published American Physical Society 2024

Language: Английский

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Origin of zigzag antiferromagnetic order in XPS3 (X=Fe,Ni) monolayers

Physical review. B./Physical review. B, Journal Year: 2024, Volume and Issue: 109(21)

Published: June 13, 2024

Recently, two monolayer magnetic materials, i.e., ${\mathrm{FePS}}_{3}$ and ${\mathrm{NiPS}}_{3}$, have been successfully fabricated. Despite them having the same atomic structure, monolayers exhibit distinct properties. holds an out-of-plane zigzag antiferromagnetic (AFM-ZZ) while ${\mathrm{NiPS}}_{3}$ exhibits in-plane AFM-ZZ structure. However, there is no theoretical model that can properly describe its ground state due to lack of a full understanding interactions. Here, by combining first-principles calculations newly developed machine learning method, we construct exact spin Hamiltonian materials. Different from previous studies failed fully consider spin-orbit-coupling effect, find in stabilized competing ferromagnetic nearest-neighbor third-nearest-neighbor exchange interactions single-ion anisotropy. In contrast, often ignored biquadratic responsible for ${\mathrm{NiPS}}_{3}$. We additionally calculate spin-wave spectrum structure based on Hamiltonian, which be directly verified experimental investigation. Our work provides framework origin two-dimensional

Language: Английский

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Time-domain signatures of distinct correlated insulators in a moiré superlattice

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 9, 2025

Language: Английский

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Quantum criticality and superconductivity in twisted transition metal dichalcogenides

Physical review. B./Physical review. B, Journal Year: 2025, Volume and Issue: 111(1)

Published: Jan. 13, 2025

Language: Английский

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