Correlation between specular Andreev reflection and zero-energy states in normal-metal/d-wave-superconductor junctions
Yasuhiro Asano, Yukio Tanaka
DOI 10.1103/PhysRevB.65.064522 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We report the effects of interfacial roughness on a zero-bias conductance peak (ZBCP) in normal-metal/d-wave-superconductor junctions. The roughness spoils to specularity of the junction interface, and causes a diffuse Andreev reflection of a quasiparticle. The ZBCP decreases linearly with a decreasing rate of the specular Andreev reflection at the interface. A sensitivity of the ZBCP to the roughness strongly depends on a transparency of the junctions. In low transparent junctions, the ZBCP disappears even in the regime of weak roughness. We also find a splitting of the ZBCP owing to the interfacial roughness in low transparent junctions.
Similar papers
Rough interface effects on normal-superconducting proximity-contact systems
similarity 0.91Yasushi Nagato & Katsuhiko Nagai
Source status unknown — claims are unverified
Theory of charge transport in diffusive normal metal/unconventional singlet superconductor contacts
similarity 0.91Y. Tanaka et al.
Source status unknown — claims are unverified
Zero-energy states in s-wave/normal-metal/d-wave superconductor junctions
similarity 0.90R. Žikić et al.
Source status unknown — claims are unverified
Barrier-induced enhancement of Andreev reflection for minority-spin quasiparticles in ferromagnetic metal/insulator/superconductor ballistic junctions
similarity 0.89A. Dimoulas
Source status unknown — claims are unverified
Enhanced conductance near zero voltage bias in mesoscopic superconductor-semiconductor junctions
similarity 0.88P. H. C. Magnée et al.
Source status unknown — claims are unverified
Spin-polarized multiple Andreev reflections in spin-split superconductors
similarity 0.88Bo Lu et al.
Source status unknown — claims are unverified