Magnetic-Field-Induced Wigner Crystallization of Charged Interlayer Excitons in van der Waals Heterostructures
arXiv:2112.13995 · doi:10.1038/s42005-022-01095-8
Abstract
We develop the theory of the magnetic-field-induced Wigner crystallization effect for charged interlayer excitons (CIE) discovered recently in transition-metal-dichalcogenide (TMD) heterobilayers. We derive the ratio of the average potential interaction energy to the average kinetic energy for the many-particle CIE system subjected to the perpendicular magnetic field of an arbitrary strength, analyze the weak and strong field regimes, and discuss the 'cold' crystallization phase transition for the CIE system in the strong field regime. We also generalize the effective g-factor concept previously formulated for interlayer excitons, to include the formation of CIEs in electrostatically doped TMD heterobilayers. We show that magnetic-field-induced Wigner crystallization and melting of CIEs can be observed in strong-field magneto-photoluminescence experiments with TMD heterobilayes of systematically varied electron-hole doping concentrations. Our results advance the capabilities of this new family of transdimensional quantum materials.
arXiv comment26 pages, 5 figures, 65 references
References in corpus (27)
- Excitons in atomically thin transition metal dichalcogenides
- Observation of Long-Lived Interlayer Excitons in Monolayer MoSe2-WSe2 Heterostructures
- Computational 2D Materials Database: Electronic Structure of Transition-Metal Dichalcogenides and Oxides
- Optical detection of Mott and generalized Wigner crystal states in WSe2/WS2 moiré superlattices
- Berry phase, hyperorbits, and the Hofstadter spectrum: semiclassical dynamics in magnetic Bloch bands
- High-temperature superfluidity with indirect excitons in van der Waals heterostructures
- Electronic properties of graphene-based bilayer systems
- Electrical control of interlayer exciton dynamics in atomically thin heterostructures
- Long-lived direct and indirect interlayer excitons in van der Waals heterostructures
- Interlayer Exciton Optoelectronics in a 2D Heterostructure p-n Junction
- Strongly correlated excitonic insulator in atomic double layers
- Quantum phase transition in a two-dimensional system of dipoles
- Deep moiré potentials in twisted transition metal dichalcogenide bilayers
- Giant Zeeman splitting inducing near-unity valley polarization in van der Waals heterostructures
- Probing the inter-layer exciton physics in a MoS/MoSe/MoS van der Waals heterostructure
- Moiré Potential Impedes Interlayer Exciton Diffusion in van der Waals Heterostructures
- Large effective mass and interaction-enhanced Zeeman splitting of -valley electrons in MoSe
- Discrete Interactions between a few Interlayer Excitons Trapped at a MoSe-WSe Heterointerface
- Localized bright luminescence of indirect excitons and trions in MoSe/WSe van der Waals heterostructure
- Lindemann melting criterion in two dimensions
- Thermal and quantum melting phase diagrams for a magnetic-field-induced Wigner solid
- Transdimensional epsilon-near-zero modes in planar plasmonic nanostructures
- Complexes of dipolar excitons in layered quasi-two-dimensional nanostructures
- Probing the Melting of a Two-dimensional Quantum Wigner Crystal via its Screening Efficiency
- Stability of trions in coupled quantum wells modelled by two-dimensional bilayers
- Crystal Phases of Charged Interlayer Excitons in van der Waals Heterostructures
- Optical probing in a bilayer dark-bright condensate system