1. Quantum dynamics of tunneling between ferromagnets
- Author
-
Yu-Li Lee and Yu-Wen Lee
- Subjects
Josephson effect ,Physics ,Condensed Matter - Mesoscale and Nanoscale Physics ,Condensed matter physics ,Spin polarization ,Condensed Matter - Superconductivity ,Spin valve ,FOS: Physical sciences ,law.invention ,Superconductivity (cond-mat.supr-con) ,Pi Josephson junction ,SQUID ,Magnetization ,law ,Condensed Matter::Superconductivity ,Mesoscale and Nanoscale Physics (cond-mat.mes-hall) ,Spinplasmonics ,Spin Hall effect ,Condensed Matter::Strongly Correlated Electrons - 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)
- Published
- 2003