Chiral magnetoresistance in Pt/Co/Pt zigzag wires
arXiv:1703.07590 · doi:10.1063/1.4979031 10.1063/1.4979031 10.1063/1.4979031
Abstract
The Rashba effect leads to a chiral precession of the spins of moving electrons while the Dzyaloshinskii-Moriya interaction (DMI) generates preference towards a chiral profile of local spins. We predict that the exchange interaction between these two spin systems results in a 'chiral' magnetoresistance depending on the chirality of the local spin texture. We observe this magnetoresistance by measuring the domain wall (DW) resistance in a uniquely designed Pt/Co/Pt zigzag wire, and by changing the chirality of the DW with applying an in-plane magnetic field. A chirality-dependent DW resistance is found, and a quantitative analysis shows a good agreement with a theory based on the Rashba model. Moreover, the DW resistance measurement allows us to independently determine the strength of the Rashba effect and the DMI simultaneously, and the result implies a possible correlation between the Rashba effect, the DMI, and the symmetric Heisenberg exchange.
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Cited by in corpus (6)
- Asymmetric skyrmion Hall effect in systems with a hybrid Dzyaloshinskii-Moriya interaction
- Chiral Domain Wall Injector Driven by Spin-orbit Torques
- Chiral anisotropic magnetoresistance of ferromagnetic helices
- Spin transparency for an interface of an ultrathin magnet within the spin dephasing length
- Domain wall resistance in CoFeB-based heterostructures with interface Dzyaloshinskii-Moriya interaction
- Nanoscale control of perpendicular magnetic anisotropy, interfacial Dzyaloshinskii-Moriya interaction and skyrmions in the inversion-symmetry-broken Ru/Co/W/Ru films