Tunable conductance of magnetic nanowires with structured domain walls
arXiv:cond-mat/0601620 · doi:10.1103/PhysRevLett.96.047208
Abstract
We show that in a magnetic nanowire with double magnetic domain walls, quantum interference results in spin-split quasistationary states localized mainly between the domain walls. Spin-flip-assisted transmission through the domain structure increases strongly when these size-quantized states are tuned on resonance with the Fermi energy, e.g. upon varying the distance between the domain walls which results in resonance-type peaks of the wire conductance. This novel phenomena is shown to be utilizable to manipulate the spin density in the domain vicinity. The domain walls parameters are readily controllable and the predicted effect is hence exploitable in spintronic devices.
arXiv comment4 pages with 4 figures
References in corpus (9)
- 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
- Voltage-Controlled Spin Selection in a Magnetic Resonant Tunnelling Diode
- Very large magnetoresistance in lateral ferromagnetic (Ga,Mn)As wires with nanoconstrictions
- Magnetization reversal by injection and transfer of spin: experiments and theory
- Ballistic versus diffusive magnetoresistance of a magnetic point contact
- Reflection of electrons from a domain wall in magnetic nanojunctions
- Multivalued dependence of the magnetoresistance on the quantized conductance in nanosize magnetic contacts
- Magnetoresistance of a semiconducting magnetic wire with domain wall
Cited by in corpus (8)
- Local current injection into mesoscopic superconductors for the manipulation of quantum states
- Current-induced interactions of multiple domain walls in magnetic quantum wires
- Spin-dependent pump current and noise in an adiabatic quantum pump based on domain walls in a magnetic nanowire
- Magnetic dynamics driven by the spin-current generated via spin-Seebeck effect
- Magnetic diode at = 300 K
- Role of non-collinear magnetization: from ferromagnetic nano wires to quantum rings
- Negative differential magneto-resistance in ferromagnetic wires with domain walls
- Dynamics of the polarization of a pinned domain wall in a magnetic nanowire