Title

Josephson (001) Tilt Grain Boundary Junctions Of High-Temperature Superconductors

Keywords

Josephson tunneling; Superconducting order parameter

Abstract

We calculate the Josephson critical current Ic across in-plane (001) tilt grain boundary junctions of high-temperature superconductors. We assume the Fermi surface has either an electron-doped form, or one of three hole-doped forms, and either random or specular tunneling across the junctions. We find that in-plane 'phase-sensitive' experiments are consistent with our results for the electron-doped superconductors. For the holedoped superconductors, however, the results depend strongly upon the details of both the Fermi surface topology and the nature of the tunneling, and are therefore considerably less robust than has generally been believed. Hence, the tricrystal, tetracrystal, and interferometry experiments on hole-doped high-temperatures superconductors are unreliable, and should be redesigned. © World Scientific Publishing Company.

Publication Date

7-30-2007

Publication Title

International Journal of Modern Physics B

Volume

21

Issue

18-19

Number of Pages

3194-3198

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1142/s0217979207044172

Socpus ID

34548777518 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/34548777518

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