Nonbosonic Moiré Excitons DOI
T. S. Huang,

Peter Lunts,

Mohammad Hafezi

et al.

Physical Review Letters, Journal Year: 2024, Volume and Issue: 132(18)

Published: April 30, 2024

Optical excitations in moiré transition metal dichalcogenide bilayers lead to the creation of excitons, as electron-hole bound states, that are generically considered within a Bose-Hubbard framework.Here, we demonstrate these composite particles obey an angular momentum commutation relation is generally non-bosonic.This emergent spin description excitons indicates limitation their occupancy on each site, which substantial weak binding regime.The effective exciton theory accordingly Hamiltonian, further becomes Hubbard model bosons subject constraint after Holstein-Primakoff transformation.We apply our three commonly studied (MoSe2/WSe2, WSe2/WS2, and WSe2/MoS2) show relevant parameter regimes allowed occupancies never exceed excitons.Our systematic provides guidelines for future research many-body physics excitons.

Language: Английский

Intralayer charge-transfer moiré excitons in van der Waals superlattices DOI
Mit H. Naik, Emma C. Regan, Zuocheng Zhang

et al.

Nature, Journal Year: 2022, Volume and Issue: 609(7925), P. 52 - 57

Published: Aug. 31, 2022

Language: Английский

Citations

108

Formation of moiré interlayer excitons in space and time DOI
David R. Schmitt, Jan Philipp Bange, Wiebke Bennecke

et al.

Nature, Journal Year: 2022, Volume and Issue: 608(7923), P. 499 - 503

Published: Aug. 17, 2022

Language: Английский

Citations

103

Intercalation in 2D materials and in situ studies DOI
Ruijie Yang, Liang Mei, Zhaoyang Lin

et al.

Nature Reviews Chemistry, Journal Year: 2024, Volume and Issue: 8(6), P. 410 - 432

Published: May 16, 2024

Language: Английский

Citations

59

Dipole ladders with large Hubbard interaction in a moiré exciton lattice DOI
Heonjoon Park,

Jiayi Zhu,

Xi Wang

et al.

Nature Physics, Journal Year: 2023, Volume and Issue: 19(9), P. 1286 - 1292

Published: June 1, 2023

Language: Английский

Citations

57

Time-resolved ARPES studies of quantum materials DOI
Fabio Boschini, Marta Zonno, A. Damascelli

et al.

Reviews of Modern Physics, Journal Year: 2024, Volume and Issue: 96(1)

Published: Feb. 27, 2024

Time-resolved angle-resolved photoemission spectroscopy provides access to light-induced changes in the electronic band structure and interactions of solids, out-of-equilibrium electron dynamics. This article reviews history future prospects for development technique, offers an overview recent achievements studying unoccupied light-driven states, photoinduced phase transitions, electron-phonon scattering, dynamics quantum materials, including topological insulators, unconventional superconductors, traditional novel semiconductors, excitonic spin-textured systems.

Language: Английский

Citations

50

Two-dimensional materials for future information technology: status and prospects DOI Creative Commons
Hao Qiu, Zhihao Yu, Tiange Zhao

et al.

Science China Information Sciences, Journal Year: 2024, Volume and Issue: 67(6)

Published: May 29, 2024

Abstract Over the past 70 years, semiconductor industry has undergone transformative changes, largely driven by miniaturization of devices and integration innovative structures materials. Two-dimensional (2D) materials like transition metal dichalcogenides (TMDs) graphene are pivotal in overcoming limitations silicon-based technologies, offering approaches transistor design functionality, enabling atomic-thin channel transistors monolithic 3D integration. We review important progress application 2D future information technology, focusing particular on microelectronics optoelectronics. comprehensively summarize key advancements across material production, characterization metrology, electronic devices, optoelectronic heterogeneous silicon. A strategic roadmap challenges for from basic research to industrial development outlined. To facilitate such a transition, technologies tools dedicated must be developed meet standards, employment AI growth, characterizations, circuit will essential. It is time academia actively engage with drive next 10 years research.

Language: Английский

Citations

30

Engineering interlayer hybridization in van der Waals bilayers DOI
Elyse Barré, Medha Dandu, S. Kundu

et al.

Nature Reviews Materials, Journal Year: 2024, Volume and Issue: 9(7), P. 499 - 508

Published: April 8, 2024

Language: Английский

Citations

22

Angle-resolved photoemission spectroscopy DOI
Hong‐Yun Zhang, Tommaso Pincelli, Chris Jozwiak

et al.

Nature Reviews Methods Primers, Journal Year: 2022, Volume and Issue: 2(1)

Published: July 14, 2022

Language: Английский

Citations

71

Van der Waals‐Interface‐Dominated All‐2D Electronics DOI
Xiankun Zhang, Yanzhe Zhang, Huihui Yu

et al.

Advanced Materials, Journal Year: 2022, Volume and Issue: 35(50)

Published: Nov. 10, 2022

Abstract The interface is the device. As feature size rapidly shrinks, silicon‐based electronic devices are facing multiple challenges of material performance decrease and quality degradation. Ultrathin 2D materials considered as potential candidates in future electronics by their atomically flat surfaces excellent immunity to short‐channel effects. Moreover, due naturally terminated weak van der Waals (vdW) interactions between layers, can be freely stacked without lattice matching limit form high‐quality heterostructure interfaces with arbitrary components twist angles. Controlled interlayer band alignment optimized interfacial carrier behavior allow all‐2D based on vdW exhibit more comprehensive functionality better performance. Especially, achieving same computing capacity conventional small footprint key development direction electronics. Herein, unique properties construction methods systematically reviewed main contributions different summarized, respectively. Finally, recent progress for discussed, how improve compatibility industrial technology pointed out a critical challenge.

Language: Английский

Citations

52

Hyperspectral imaging of exciton confinement within a moiré unit cell with a subnanometer electron probe DOI Open Access
Sandhya Susarla, Mit H. Naik, Daria D. Blach

et al.

Science, Journal Year: 2022, Volume and Issue: 378(6625), P. 1235 - 1239

Published: Dec. 15, 2022

Electronic and optical excitations in two-dimensional moir\'e systems are uniquely sensitive to local atomic registries, leading materials- twist-angle specific correlated electronic ground states with varied degree of localization. However, there has been no direct experimental correlation between the sub-nanometer structure emergent excitonic transitions, comprising tightly-bound pairs photoexcited electrons holes. Here, we use cryogenic transmission electron microscopy spectroscopy simultaneously image structural reconstruction associated localization lowest-energy intralayer exciton a rotationally aligned heterostructure WS2 WSe2 monolayers. In conjunction ab initio calculations, determine that center-of-mass wavefunction is strongly modulated space, confined radius ~ 2 nm around highest-energy stacking site unit-cell, forming triangular lattice. Our results provide evidence reconstructions lead confining potentials engineering strain at nanoscale will enable new types lattices.

Language: Английский

Citations

52