Majorana fermion arcs and the local density of states of UTe${}_2$

Abstract

${\text{UTe}}_2$ is a leading candidate for chiral p-wave superconductivity, and for hosting exotic Majorana fermion quasiparticles. Motivated by recent STM experiments in this system, we study particle-hole symmetry breaking in chiral p-wave superconductors. We compute the local density of states from Majorana fermion surface states in the presence of Rashba surface spin-orbit coupling, which is expected to be sizeable in heavy-fermion materials like UTe${}_2$. We show that time-reversal and surface reflection symmetry breaking lead to a natural pairing tendency towards a triplet pair density wave state, which naturally can account for broken particle-hole symmetry.

References in corpus (4)

• Introduction to topological superconductivity and Majorana fermions
• Unconventional Superconductivity in Heavy Fermion UTe2
• Three-Dimensional Majorana Fermions in Chiral Superconductors
• Weyl Superconductivity in UTe2

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• Possible Topological Superconductivity in a Topological Crystalline Insulator (Pb${}_{1-x}$Sn${}_x$)${}_{1-y}$In${}_y$Te
• Topological pair density waves in kagome superconductors