Fermi edge singularity in neutral electron–hole system DOI
D. J. Choksy,

E.A. Szwed,

L. V. Butov

et al.

Nature Physics, Journal Year: 2023, Volume and Issue: 19(9), P. 1275 - 1279

Published: June 22, 2023

Language: Английский

Prediction of polarization vortices, charge modulation, flat bands, and moiré magnetism in twisted oxide bilayers DOI
Naafis Ahnaf Shahed,

Kartik Samanta,

Mohamed Elekhtiar

et al.

Physical review. B./Physical review. B, Journal Year: 2025, Volume and Issue: 111(19)

Published: May 15, 2025

Language: Английский

Citations

0
Exciton Superposition across Moiré States in a Semiconducting Moiré Superlattice DOI Creative Commons
Zhen Lian, Dongxue Chen,

Yuze Meng

et al.

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: Aug. 19, 2023

Moiré superlattices of semiconducting transition metal dichalcogenides enable unprecedented spatial control electron wavefunctions, leading to emerging quantum states. The breaking translational symmetry further introduces a new degree freedom: high moiré sites energy minima behaving as spatially separated dots. We demonstrate the superposition between two by constructing trilayer WSe

Language: Английский

Citations

9
Conduction Band Replicas in a 2D Moiré Semiconductor Heterobilayer DOI

Abigail Graham,

Heonjoon Park, Paul Nguyen

et al.

Nano Letters, Journal Year: 2024, Volume and Issue: 24(17), P. 5117 - 5124

Published: April 17, 2024

Stacking monolayer semiconductors creates moiré patterns, leading to correlated and topological electronic phenomena, but measurements of the structure underpinning these phenomena are scarce. Here, we investigate properties conduction band in heterobilayers WS

Language: Английский

Citations

3
Quantum anomalous Hall effect and electric-field-induced topological phase transition in AB-stacked MoTe2/WSe2 moiré heterobilayers DOI
Yao‐Wen Chang, Yia‐Chung Chang

Physical review. B./Physical review. B, Journal Year: 2022, Volume and Issue: 106(24)

Published: Dec. 12, 2022

We propose a new mechanism to explain the quantum anomalous Hall (QAH) effect and electric-field-induced topological phase transition in AB-stacked MoTe${}_2$/WSe${}_2$ moir\'e heterobilayers at $\nu=1$ hole filling. suggest that Chern band of QAH state is generated from an intrinsic inversion composed highest two bands with opposite valley numbers gap opening induced by Coulomb-interaction-driven magnetic orders. These orders, including in-plane $120^{\circ}$-N\'eel order ferromagnetic order, interact via corresponding exchange fields. The N\'eel ensures insulating gap, induces non-zero number, both orders contribute time-reversal symmetry breaking. acquired Hartree-Fock interaction, formation attributed interlayer-exciton condensation exciton ferromagnetism. ferromagnetism can be demonstrated excitonic Bose-Hubbard physics Berezinskii-Kosterlitz-Thouless transition. In low electric fields, equilibrium Mott-insulator state. At certain field, correlated hole-occupied condensate becomes thermodynamically stable phase, occurs as emerges. consistency between present theory experimental observations discussed. Experimental observations, spin-polarized/valley-coherent nature state, absence charge closure transition, canted spin texture, insulator-to-metal are interpreted mechanism.

Language: Английский

Citations

14
Fermi edge singularity in neutral electron–hole system DOI
D. J. Choksy,

E.A. Szwed,

L. V. Butov

et al.

Nature Physics, Journal Year: 2023, Volume and Issue: 19(9), P. 1275 - 1279

Published: June 22, 2023

Language: Английский

Citations

8