Anyon bound states in MoTe2 Fractional Chern Insulators
Abstract
Binding anyons to optically active excitons offers a route to manipulate fractional excitations and reveal the internal spatial structure of anyons. We establish the formation of anyon bound states between a mobile dipolar exciton and an e/3 quasihole in a twisted bilayer MoTe2 fractional Chern insulator. Using exact diagonalization of a continuum-based interacting model, we identify a regime of meV-scale binding and strong exciton-quasihole entanglement controlled by exciton mobility and the distance between the exciton and the FCI. Spatial correlations resolve a localized depletion core carrying approximately e/3 charge around the exciton, providing a real-space characterization of the bound state. Beyond its fractional charge, the quasihole exhibits a moiré-induced octupolar structure. Interlayer tunneling anisotropy strongly deforms this structure while leaving the enclosed charge nearly unchanged, linking the internal profile of the anyon to the underlying electronic quantum geometry. These findings establish conditions for robust exciton-anyon binding in moiré heterostructures and show how these composites provide access to properties of fractional excitations beyond their total charge.
Related
- Band mixing and particle-hole asymmetry in moire fractional Chern insulators
- Spinless and Spinful Charge Excitations in Moiré Fractional Chern Insulators
- Spin Configurations of Anyonic excitations in Moiré Fractional Chern Insulators
- Fractional Chern insulators and composite Fermi liquids vs. charge order in twisted MoTe2
- Attraction from repulsion in an interacting Chern band: chiral superconductivity, generalized Hall crystals, and competing fractional Chern insulators
BibTeX
@misc{lu2026anyon,
title = {{Anyon bound states in MoTe$_2$ Fractional Chern Insulators}},
author = {Tianhong Lu and Luiz H. Santos},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.22473},
eprint = {2610.22473},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.22473},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Anyon bound states in MoTe_2 Fractional Chern Insulators
AU - Tianhong Lu
AU - Luiz H. Santos
PY - 2026
DA - 2026/10/15
PB - arXiv
DO - 10.48550/arxiv.2610.22473
UR - https://arxiv.org/abs/2610.22473
AB - Binding anyons to optically active excitons offers a route to manipulate fractional excitations and reveal the internal spatial structure of anyons. We establish the formation of anyon bound states between a mobile dipolar exciton and an e/3 quasihole in a twisted bilayer MoTe_2 fractional Chern insulator. Using exact diagonalization of a continuum-based interacting model, we identify a regime of meV-scale binding and strong exciton-quasihole entanglement controlled by exciton mobility and the distance between the exciton and the FCI. Spatial correlations resolve a localized depletion core carrying approximately e/3 charge around the exciton, providing a real-space characterization of the bound state. Beyond its fractional charge, the quasihole exhibits a moiré-induced octupolar structure. Interlayer tunneling anisotropy strongly deforms this structure while leaving the enclosed charge nearly unchanged, linking the internal profile of the anyon to the underlying electronic quantum geometry. These findings establish conditions for robust exciton-anyon binding in moiré heterostructures and show how these composites provide access to properties of fractional excitations beyond their total charge.
ER -