Theory of spin-coherent transport through a defect spin state in a metal/ferromagnet tunnel junction during ferromagnetic resonance

Abstract

We describe the coherent interaction between a defect spin at the interface of a ferromagnet and a non-magnetic material, under bias and when the magnetization of the ferromagnetic contact precesses during ferromagnetic resonance. The magnet filters charge carriers by preferentially allowing in parallel spins, which leads to a dynamic spin accumulation on the defect. Local effective fields acting on the defect spin site modify the defect spin's precession, which also modifies the charge current through the defect. This new form of current-detected spin resonance reveals the local environment of the defect, and thus can yield the defect identity.

complete rewrite - 5 pages, 4 figures

References in corpus (6)

• Spin Seebeck insulator
• Quantum Dot as a Spin--Current Diode
• Off-Resonant Manipulation of Spins in Diamond via Precessing Magnetization of a Proximal Ferromagnet
• Magnetic-Field-Modulated Resonant Tunneling in Ferromagnetic-Insulator-Nonmagnetic junctions
• Impurity-assisted tunneling magnetoresistance under weak magnetic field
• Current and Shot Noise Measurements in a Carbon Nanotube-Based Spin Diode

Cited by in corpus (4)

• Evidence of Pure Spin-Current Generated by Spin Pumping in Interface Localized States in Hybrid Metal-Silicon-Metal Vertical Structures
• Spin-current mediated exchange coupling in MgO-based magnetic tunnel junctions
• Image of dynamic local exchange interactions in the dc magnetoresistance of spin-polarized current through a dopant
• Theory of oblique-field magnetoresistance from spin centers in three-terminal spintronic devices