Chiral topological excitonic insulator in semiconductor quantum wells

Abstract

We present a scheme to realize the chiral topological excitonic insulator in semiconductor heterostructures which can be experimentally fabricated with a coupled quantum well adjacent to twoferromagnetic insulating films. The different mean-field chiral topological orders, which are due to the change in the directions of the magnetization of the ferromagnetic films, can be characterized by the TKNN numbers in the bulk system as well as by the winding numbers of the gapless states in the edged system. Furthermore, we propose an experimental scheme to detect the emergence of the chiral gapless edge state and distinguish different chiral topological orders by measuring the thermal conductance.

14 pages, 4 figures

References in corpus (7)

• Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
• A generic new platform for topological quantum computation using semiconductor heterostructures
• Majorana fermions in a tunable semiconductor device
• Non-Abelian Topological Order in S-Wave Superfluids of Ultracold Fermionic Atoms
• Quantum Anomalous Hall Effect in Hg${}_{1-y}$Mn${}_y$Te Quantum Wells
• Topological Phases of Noncentrosymmetric Superconductors: Edge States, Majorana Fermions, and the Non-Abelian Statistics
• The Origin of Anomalous Low-Temperature Downturns in the Thermal Conductivity of Cuprates

Cited by in corpus (9)

• Topological Polaritons and Excitons in Garden Variety Systems
• Time Reversal Symmetric Topological Exciton Condensate in Bilayer HgTe Quantum Wells
• Topological phases and fractional excitations of the exciton condensate in a special class of bilayer systems
• Interacting topological mirror excitonic insulator in one dimension
• Electron-hole pairing of Fermi-arc surface states in a Weyl-semimetal bilayer
• Topological orbital superfluid with chiral d-wave order in a rotating optical lattice
• Prediction of at topological $p+ip$ excitonic insulator with parity anomaly
• Topological spin-up triplet excitonic condensation in two-dimensional electron-hole systems
• Interplay of Rashba spin-orbit coupling and Coulomb interaction in topological spin-triplet excitonic condensates