Quantitative model for the ICR product in d-wave Josephson junctions

Takehito Yokoyama; Yuki Sawa; Yukio Tanaka; Alexander A. Golubov; Atsutaka Maeda; Akira Fujimaki

doi:10.1103/PhysRevB.76.052508

← Back to search

Quantitative model for the ICR product in d-wave Josephson junctions

Takehito Yokoyama, Yuki Sawa, Yukio Tanaka, Alexander A. Golubov, Atsutaka Maeda, Akira Fujimaki

DOI 10.1103/PhysRevB.76.052508 · Physical Review B

T1

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 study theoretically the Josephson effect in d-wave superconductor/diffusive normal metal/insulator/diffusive normal metal/d-wave superconductor (D/DN/I/DN/D) junctions. This model aims to describe practical junctions in high-TC cuprate superconductors, in which the product of the critical Josephson current (IC) and the normal state resistance (R) (the so-called ICR product) is very small compared to the prediction of the standard theory for clean d-wave superconductor/insulator/d-wave superconductor (DID) junctions. We show that the ICR product in D/DN/I/DN/D junctions can be much smaller than that in DID junctions. The proposed theory describes the behavior of ICR products quantitatively in high-TC cuprate junctions.