Quasiparticle interference and resonant states in normal and superconducting line nodal semimetals

Chandan Setty; Philip W. Phillips; Awadhesh Narayan

doi:10.1103/PhysRevB.95.140202

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Quasiparticle interference and resonant states in normal and superconducting line nodal semimetals

Chandan Setty, Philip W. Phillips, Awadhesh Narayan

DOI 10.1103/PhysRevB.95.140202 · Physical Review B

T1

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Abstract

We study impurity scattering in the normal and d-wave superconducting states of line nodal semimetals and show that, due to additional scattering phase space available for impurities on the surface, the quasiparticle interference pattern acquires an extended character instead of a discrete collection of delta function peaks. Moreover, using the T-matrix formalism, we demonstrate that the conventional behavior of a scalar impurity in a d-wave superconductor breaks down on the surface of a line nodal semimetal in the quasi-flat-band limit.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi2Se3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Bi2Te3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown