Charge pumping in magnetic tunnel junctions: Scattering theory

Abstract

We study theoretically the charge transport pumped by magnetization dynamics through epitaxial FIF and FNIF magnetic tunnel junctions (F: Ferromagnet, I: Insulator, N: Normal metal). We predict a small but measurable DC pumping voltage under ferromagnetic resonance conditions for collinear magnetization configurations, which may change sign as function of barrier parameters. A much larger AC pumping voltage is expected when the magnetizations are at right angles. Quantum size effects are predicted for an FNIF structure as a function of the normal layer thickness.

4 pages, 3 figures. to be published on Physical Review B Rapid Communication

References in corpus (8)

• Electrical detection of spin pumping due to the precessing magnetization of a single ferromagnet
• Electron Transport Driven by Nonequilibrium Magnetic Textures
• Spin pumping by a field-driven domain wall
• Spin Pumping of Current in Non-Uniform Conducting Magnets
• Large cone angle magnetization precession of an individual nanomagnet with dc electrical detection
• Voltage generation by ferromagnetic resonance
• Tunnel barrier enhanced voltage signals generated by magnetization precession of a single ferromagnetic layer
• On the Newtonian origin of the spin motive force in ferromagnetic atomic wires

Cited by in corpus (6)

• Spin-transfer torque in magnetic tunnel junctions: Scattering theory
• Effects of non-adiabaticity on the voltage generated by a moving domain wall
• Spin and charge pumping in magnetic tunnel junctions with precessing magnetization: A nonequilibrium Green function approach
• Inverse Spin Hall Effect Driven by Spin Motive Force
• Tunnel-barrier-enhanced dc voltage signals induced by magnetization dynamics in magnetic tunnel junctions
• Charge pumping and the colored thermal voltage noise in spin valves