Magnetic Field Effect in Josephson Tunneling between d-Wave Superconductors

Xin-Zhong Yan; Chia-Ren Hu

doi:10.1103/PhysRevLett.83.1656

← Back to search

Magnetic Field Effect in Josephson Tunneling between d-Wave Superconductors

Xin-Zhong Yan, Chia-Ren Hu

DOI 10.1103/PhysRevLett.83.1656 · Physical Review Letters

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 magnetic field effects in the Josephson tunneling between two d-wave superconductors are investigated. For a junction with a flat {001}|{110} or {100}|{110} interface under a magnetic field B, the tunneling current is predominantly mediated by the midgap states. The energies of these states shift in proportion to B and the sign of their momenta along the interface, leading to a skewed occupation of these states. The tunneling current density therefore is a linear function of B for weak B. Apart from the Fraunhofer factor, the total critical current depends on B also through this current density. This prediction can explain a published measurement.

Source-reported materials — not catalogue approval

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