Repulsion-Driven Topological Superconductivity in Twisted MoTe2
Abstract
We show that a microscopic model of twisted MoTe2 with screened Coulomb interactions produces topological superconductivity. Using the density matrix renormalization group (DMRG) on infinite cylinders, we find that the narrow Chern band of twisted MoTe2 has Cooper pair correlations that strengthen with cylinder circumference, consistent with two dimensional superconductivity. The superconductor has chiral f-wave pairing around the valley center, and its topology produces chiral Majorana edge modes and non-Abelian vortex cores. At zero displacement field, the superconductor spans fillings −0.78≲ν≲−0.72, close to the experimental range, and extends in a dome to finite displacement field. We then predict how its stiffness evolves with the filling and the tunable displacement field. The interplay with screening length is also examined. Nearby, we find a fractional Chern insulator, a topological charge density wave, a metal, and a charge-ordered state. The last is a candidate for the reentrant integer Hall regime in experiments. These results establish a route from repulsive interactions in microscopic models of moiré materials to chiral topological uperconductors with chiral Majorana edge modes.
Related
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BibTeX
@misc{wang2026repulsiondriven,
title = {{Repulsion-Driven Topological Superconductivity in Twisted MoTe$_2$}},
author = {Tianle Wang and Tomohiro Soejima and Norman Y. Yao and Ashvin Vishwanath and Michael P. Zaletel and Taige Wang and Daniel E. Parker},
howpublished = {arXiv},
year = {2026},
month = nov,
doi = {10.48550/arxiv.2611.03833},
eprint = {2611.03833},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2611.03833},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Repulsion-Driven Topological Superconductivity in Twisted MoTe_2
AU - Tianle Wang
AU - Tomohiro Soejima
AU - Norman Y. Yao
AU - Ashvin Vishwanath
AU - Michael P. Zaletel
AU - Taige Wang
AU - Daniel E. Parker
PY - 2026
DA - 2026/11/02
PB - arXiv
DO - 10.48550/arxiv.2611.03833
UR - https://arxiv.org/abs/2611.03833
AB - We show that a microscopic model of twisted MoTe_2 with screened Coulomb interactions produces topological superconductivity. Using the density matrix renormalization group (DMRG) on infinite cylinders, we find that the narrow Chern band of twisted MoTe_2 has Cooper pair correlations that strengthen with cylinder circumference, consistent with two dimensional superconductivity. The superconductor has chiral f-wave pairing around the valley center, and its topology produces chiral Majorana edge modes and non-Abelian vortex cores. At zero displacement field, the superconductor spans fillings −0.78≲ν≲−0.72, close to the experimental range, and extends in a dome to finite displacement field. We then predict how its stiffness evolves with the filling and the tunable displacement field. The interplay with screening length is also examined. Nearby, we find a fractional Chern insulator, a topological charge density wave, a metal, and a charge-ordered state. The last is a candidate for the reentrant integer Hall regime in experiments. These results establish a route from repulsive interactions in microscopic models of moiré materials to chiral topological uperconductors with chiral Majorana edge modes.
ER -