Topological Chiral Superconductivity from Doping Correlated Charge Transfer Insulator with Orbital Magnetism
Abstract
Topological chiral superconductivity has been extensively studied from the perspective of electronic structures in momentum space, while its emergence from real-space processes in strongly interacting systems remains largely unexplored. Here, we study a doped charge-transfer insulator in a strongly repulsive spinless-fermion model with three sublattices and 2π flux per unit cell. Combining perturbative analysis, exact diagonalization, and density matrix renormalization group simulations, we establish a topological superconducting ground state with p+ip symmetry. In the large charge-transfer gap limit, chiral charge-transfer excitations generate a correlated-hopping process that provides a microscopic mechanism for electron pairing and its chiral structure. The chiral superconductivity persists into the smaller-gap regime, where chiral excitonic two-particle bound state can emerge. Our results establish a concrete real-space route to topological chiral superconductivity upon doping strongly interacting charge-transfer insulators with orbital magnetism.
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BibTeX
@misc{sun2026topological,
title = {{Topological Chiral Superconductivity from Doping Correlated Charge Transfer Insulator with Orbital Magnetism}},
author = {Wen Sun and Yuan Yang and Shou-Shu Gong and Wen Huang},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.16674},
eprint = {2610.16674},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.16674},
}
RIS
TY - UNPB
TI - Topological Chiral Superconductivity from Doping Correlated Charge Transfer Insulator with Orbital Magnetism
AU - Wen Sun
AU - Yuan Yang
AU - Shou-Shu Gong
AU - Wen Huang
PY - 2026
DA - 2026/10/29
PB - arXiv
DO - 10.48550/arxiv.2610.16674
UR - https://arxiv.org/abs/2610.16674
AB - Topological chiral superconductivity has been extensively studied from the perspective of electronic structures in momentum space, while its emergence from real-space processes in strongly interacting systems remains largely unexplored. Here, we study a doped charge-transfer insulator in a strongly repulsive spinless-fermion model with three sublattices and 2π flux per unit cell. Combining perturbative analysis, exact diagonalization, and density matrix renormalization group simulations, we establish a topological superconducting ground state with p+ip symmetry. In the large charge-transfer gap limit, chiral charge-transfer excitations generate a correlated-hopping process that provides a microscopic mechanism for electron pairing and its chiral structure. The chiral superconductivity persists into the smaller-gap regime, where chiral excitonic two-particle bound state can emerge. Our results establish a concrete real-space route to topological chiral superconductivity upon doping strongly interacting charge-transfer insulators with orbital magnetism.
ER -