Topological superconductivity in a spin-orbit coupled Kondo lattice

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 UTe${}_2$.

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Cited by in corpus (2)

• Microscopic theory of pair density waves in spin-orbit coupled Kondo lattice
• Revealing isotropic abundant low-energy excitations in UTe${}_2$ through complex microwave surface impedance