The low-energy quasiparticle states of a disordered d-wave superconductor are investigated theoretically. A class of such states, formed via tunneling between the Andreev bound states that are localized around extended impurities (and result from scattering between pair-potential lobes that differ in sign), is identified. Its (divergent) contribution to the total density of states is determined by taking advantage of connections with certain one-dimensional random tight-binding models. The states under discussion should be distinguished from those associated with nodes in the pair potential. © 2002 The American Physical Society.
Publication Source (Journal or Book title)
Physical Review B - Condensed Matter and Materials Physics
Adagideli, İ., Sheehy, D., & Goldbart, P. (2002). Density of states in (formula presented)-wave superconductors disordered by extended impurities. Physical Review B - Condensed Matter and Materials Physics, 66 (14), 1-4. https://doi.org/10.1103/PhysRevB.66.140512