Surface State Tunneling Signatures in the Two-Component Superconductor UPt3

Fabian Lambert; Alireza Akbari.; Peter Thalmeier; Ilya Eremin

doi:10.1103/PhysRevLett.118.087004

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Surface State Tunneling Signatures in the Two-Component Superconductor UPt3

Fabian Lambert, Alireza Akbari., Peter Thalmeier, Ilya Eremin

DOI 10.1103/PhysRevLett.118.087004 · Physical Review Letters

T1

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Abstract

Quasiparticle interference (QPI) imaging of Bogoliubov excitations in quasi-two-dimensional unconventional superconductors has become a powerful technique for measuring the superconducting gap and its symmetry. Here, we present the extension of this method to three-dimensional superconductors and analyze the expected QPI spectrum for the two-component heavy-fermion superconductor UPt3 whose gap structure is still controversial. Starting from a 3D electronic structure and the three proposed chiral gap models E1g,u or E2u, we perform a slab calculation that simultaneously gives extended bulk states and topologically protected in-gap dispersionless surface states. We show that the number of Weyl arcs and their hybridization with the line node provides a fingerprint that may finally determine the true nodal structure of the UPt3 superconductor.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
UPt3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown