Realizing Hopf Insulators in Dipolar Spin Systems

Volume: 127, Issue: 1
Published: Jun 28, 2021
Abstract
The Hopf insulator is a weak topological insulator characterized by an insulating bulk with conducting edge states protected by an integer-valued linking number invariant. The state exists in three-dimensional two-band models. We demonstrate that the Hopf insulator can be naturally realized in lattices of dipolar-interacting spins, where spin exchange plays the role of particle hopping. The long-ranged, anisotropic nature of the dipole-dipole...
Paper Details
Title
Realizing Hopf Insulators in Dipolar Spin Systems
Published Date
Jun 28, 2021
Volume
127
Issue
1
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