Impurity resonance states in noncentrosymmetric superconductor $CeP{t}_{3}Si$: a probe for Cooper-pairing symmetry

Abstract

Motivated by the recent discovery of noncentrosymmetric superconductors, such as $CeP{t}_{3}Si$, $CeRhS{i}_3$ and $CeIrS{i}_3$, we investigate theoretically the impurity resonance states with coexisting $s$- and p-wave pairing symmetries. Due to the nodal structure of the gap function, we find single nonmagnetic impurity-induced resonances appearing in the local density of state (LDOS). In particular, we analyze the evolution of the local density of states for coexisting isotropic s-wave and p-wave superconducting states and compare with that of anisotropic s-wave and p-wave symmetries of the superconducting gap. Our results show that the scanning tunneling microscopy can shed light on the particular structure of the superconducting gap in non-centrosymmetric superconductors.

arXiv comment5 pages, 5 figures, typos corrected, final version in Phys. Rev. B

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• Asymptotic behavior of impurity-induced bound states in low-dimensional topological superconductors
• Unusual behaviours and Impurity Effects in the Noncentrosymmetric Superconductor CePt3Si
• Superconductivity in a two-dimensional superconductor with Rashba and Dresselhaus spin-orbit couplings
• Rashba spin-orbit coupling effects in quasiparticle interference of non-centrosymmetric superconductors
• Nature and symmetry of the order parameter of the noncentrosymmetric superconductor Li2Pt3B
• Local electronic structures on the superconducting interface $LaAl{O}_3/SrTi{O}_3$
• Full t-matrix approach to quasiparticle interference in non-centrosymmetric superconductors
• Spin-resolved impurity resonance states in electron-doped cuprate superconductors
• Nonmagnetic impurity resonance states as a test of superconducting pairing symmetry in CeCoIn${}_5$
• Impurity induced bound states and proximity effect in a bilayer exciton condensate
• Position-dependent effect of non-magnetic impurities on superconducting properties of nanowires
• Absence of spin-orbit-coupling-induced effects on lattice dynamics in CePt3Si
• Bound states around impurities in a superconducting bilayer
• Electron correlation and impurity-induced quasiparticle resonance states in cuprate superconductors
• Evolution of structure, magnetic and transport properties of Fe${}_{1-x}$Mn${}_x$Se
• Dispersion and damping of zone-boundary magnons in the noncentrosymmetric superconductor CePt3Si