Work

Topological superconductivity in a spin-orbit coupled Kondo lattice

Year: 2024

Type: article

Abstract: We consider the effect of spin-orbit coupling on a two-dimensional Kondo Lattice model, in which conduction electrons are antiferromagnetically coupled to a Yao-Lee spin liquid. When a Rashba spin-orbit interaction and a nearest-neighbor Kondo interaction is introduced, the low-energy Majorana bands become gapped and develop Chern numbers, protecting unidirectionally propagating Majorana edge modes. Our model describes a chiral topological superconductor with fractionalized charge-$e$ order parameter and spontaneously broken time-reversal symmetry, which may be of interest for certain heavy fermion superconductors, such as ${\mathrm{UTe}}_{2}$.

Source: Physical review. B./Physical review. B

DOI: 10.1103/physrevb.110.235148

Authors: Zekun Zhuang, Piers Coleman

Institutions: Rutgers, The State University of New Jersey, University of Wisconsin–Madison, Royal Holloway University of London

Language: English

Topic: Topological Materials and Phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, Division of Materials Research

Awards: Entanglement Physics of Quantum f-electron Materials, QLCI-CI: NSF Quantum Leap Challenge Institute for Hybrid Quantum Architectures and Networks, G7423125706