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Topological superconductivity in a spin-orbit coupled Kondo lattice

Zekun Zhuang, Piers Coleman

DOI 10.1103/PhysRevB.110.235148 · Physical Review B

T1

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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 UTe2.

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FormulaReported Tc (K)Pressure (GPa)Type
UTe2

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—Pressure not reportedunknown

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