c-axis Josephson tunneling in dx2−y2-wave superconductors

Kazumi Maki; Stephan Haas

doi:10.1103/PhysRevB.67.020510

← Back to search

c-axis Josephson tunneling in dx2−y2-wave superconductors

Kazumi Maki, Stephan Haas

DOI 10.1103/PhysRevB.67.020510 · 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

The temperature and angular dependence of the c-axis Josephson current and the superfluid density in layered dx2−y2-wave superconductors are studied within the framework of an extended Ambegaokar-Baratoff formalism. In particular, the effects of angle-dependent tunneling matrix elements and Andreev scattering at grain boundaries are taken into account. These lead to strong corrections of the low-temperature behavior of the plasma frequency and the Josephson current. Recent c-axis measurements on the cuprate high-temperature superconductors HgBa2CaCu1+δ and Bi2Sr2CaCu2O8+δ can therefore be interpreted to be consistent with a dx2−y2-wave order parameter.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
HgBa2CaCu1+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Tl2Ba2CuO6 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown