Current-induced interactions of multiple domain walls in magnetic quantum wires
arXiv:0905.3644 · doi:10.1103/PhysRevB.79.174422
Abstract
We show that an applied charge current in a magnetic nanowire containing domain walls (DWs) results in an interaction between DWs mediated by spin-dependent interferences of the scattered carriers. The energy and torque associated with this interaction show an oscillatory behaviour as a function of the mutual DWs orientations and separations, thus affecting the DWs' arrangements and shapes. Based on the derived DWs interaction energy and torque we calculate DW dynamics and uncover potential applications of interacting DWs as a tunable nano-mechanical oscillator. We also discuss the effect of impurities on the DW interaction.
Published as Phys. Rev. B 79, 174422 (2009)
References in corpus (18)
- Microwave Oscillations of a Nanomagnet Driven by a Spin-Polarized Current
- Current-driven Magnetization Reversal and Spin Wave Excitations in Co/Cu/Co Pillars
- Real-space observation of current-driven domain wall motion in submicron magnetic wires
- Anatomy of Spin-Transfer Torque
- Resistivity due to a Domain Wall in Ferromagnetic Metal
- Geometrically constrained magnetic wall
- Anomalous Bias Dependence of Spin Torque in Magnetic Tunnel Junctions
- Island nucleation in thin-film epitaxy: A first-principles investigation
- Magnetic oxide semiconductors
- Very large magnetoresistance in lateral ferromagnetic (Ga,Mn)As wires with nanoconstrictions
- New Model System for a One-Dimensional Electron Liquid: Self-Organized Atomic Gold Chains on Ge(001)
- Reflection of electrons from a domain wall in magnetic nanojunctions
- Electrons in a ferromagnetic metal with a domain wall
- Magnetoresistance of a semiconducting magnetic wire with domain wall
- Current-induced motion of a domain wall in magnetic nanowires
- Domain walls in (Ga,Mn)As diluted magnetic semiconductor
- Tunable conductance of magnetic nanowires with structured domain walls
- Transmission of correlated electrons through sharp domain walls in magnetic nanowires: a renormalization group approach
Cited by in corpus (9)
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- Indirect Interaction of Magnetic Domain Walls
- Negative differential magneto-resistance in ferromagnetic wires with domain walls
- Role of non-collinear magnetization: from ferromagnetic nano wires to quantum rings
- Dynamics of the polarization of a pinned domain wall in a magnetic nanowire
- Local spin transfer torque and magnetoresistance in domain walls with variable width