Quantum dynamics of tunneling between ferromagnets

Abstract

We study the Josephson-like spin currents between two ferromagnetic metals by deriving the effective action of the junction. A DC spin Josephson current with the full O(3) symmetry is obtained. By the analogy to the superconducting junctions, we have shown that a time-independent uniform magnetic field can serve as the source of the AC spin Josephson effect. That is, the spin current becomes a periodic function of the time with the period proportional to the inverse of the magnitude of the external magnetic field.

Phys. Rev. B 68, 184413 (2003)

References in corpus (3)

• Magnetization transport and quantized spin conductance
• Quantum spin field effect transistor
• Persistent spin currents in mesoscopic Heisenberg rings

Cited by in corpus (11)

• An Introduction to Spontaneous Symmetry Breaking
• Tunneling currents in ferromagnetic systems with multiple broken symmetries
• Equilibrium spin current through the tunnelling junctions
• Dissipationless Spin Current between Two Coupled Ferromagnets
• Flux Quantization Due to Monopole and Dipole Currents
• Josephson-like spin current in junctions composed of antiferromagnets and ferromagnets
• Generalized DC and AC Josephson effects in antiferromagnets and in antiferromagnetic d-wave superconductors
• Theory of generalized Josephson effects
• A Scattering method to the equilibrium spin current in a ferromagnet junction
• Acoustic spin current generation in superconductors
• Tunneling spin current and spin diode behavior in bilayer system