Detrimental Effect of Interfacial Dzyaloshinskii-Moriya Interaction on Perpendicular Spin-Transfer-Torque Magnetic Random Access Memory

Abstract

Interfacial Dzyaloshinskii-Moriya interaction in ferromagnet/heavy metal bilayers is recently of considerable interest as it offers an efficient control of domain walls and the stabilization of magnetic skyrmions. However, its effect on the performance of perpendicular spin transfer torque memory has not been explored yet. We show based on numerical studies that the interfacial Dzyaloshinskii-Moriya interaction decreases the thermal energy barrier while increases the switching current. As high thermal energy barrier as well as low switching current is required for the commercialization of spin torque memory, our results suggest that the interfacial Dzyaloshinskii-Moriya interaction should be minimized for spin torque memory applications.

13 pages, 3 figures

References in corpus (3)

• Direct observation of the Dzyaloshinskii-Moriya interaction in a Pt/Co/Ni film
• Interfacial Dzyaloshinskii-Moriya interaction in perpendicularly-magnetized Pt/Co/AlO${}_x$ ultrathin films measured by Brillouin light spectroscopy
• Dzyaloshinskii-Moriya interaction and Hall effects in the skyrmion phase of MnFeGe alloys

Cited by in corpus (13)

• Skyrmions in magnetic tunnel junctions
• Chirality in magnetic multilayers probed by the symmetry and the amplitude of dichroism in X-ray resonant magnetic scattering
• Magnetic droplet nucleation with homochiral Neel domain wall
• Disruptive effect of Dzyaloshinskii-Moriya interaction on the MRAM cell performance
• Entropy-reduced retention times in magnetic memory elements: A case of the Meyer-Neldel Compensation Rule
• Thermally nucleated magnetic reversal in CoFeB/MgO nanodots
• Skyrmion mediated voltage controlled switching of ferromagnets for reliable and energy efficient 2-terminal memory
• Size and shape of skyrmions for variable Dzyaloshinskii-Moriya interaction and uniaxial anisotropy
• Tuning of the Dzyaloshinskii-Moriya Interaction by He${}^{+}$ ion irradiation
• Magnetization dynamics modulated by Dzyaloshinskii-Moriya interaction in the double-interface spin transfer torque magnetic tunnel junction
• Spin-torque induced wall motion in perpendicularly magnetized discs: ballistic versus oscillatory behavior
• Quantifying the thermal stability in perpendicularly magnetized ferromagnetic nanodisks with forward flux sampling
• Energy efficient and fast reversal of a fixed skyrmions with spin current assisted by voltage controlled magnetic anisotropy