Magnetization switching of a metallic nanomagnet via current-induced surface spin-polarization of an underlying topological insulator

• Published in: Journal of applied physics Vol. 117; no. 16
• Main Authors: Roy, Urmimala, Dey, Rik, Pramanik, Tanmoy, Ghosh, Bahniman, Register, Leonard F., Banerjee, Sanjay K.
• Format: Journal Article
• Language: English
• Published: Melville American Institute of Physics 28.04.2015
• Subjects: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COMPARATIVE EVALUATIONS; Computer simulation; COUPLING; Current injection; DIFFUSION; EFFICIENCY; ELECTRIC CURRENTS; Electrical resistivity; FERROMAGNETIC MATERIALS; FERROMAGNETISM; Interlayers; Low conductivity; Magnetic switching; MAGNETIZATION; NANOSTRUCTURES; Polarization (spin alignment); Spin dynamics; SPIN ORIENTATION; Surface layers; SURFACES; TEMPERATURE RANGE 0273-0400 K; Thermal stability; Titanium; TOPOLOGY; Torque; Transport; VOLATILITY

We consider a thermally stable, metallic nanoscale ferromagnet (FM) subject to spin-polarized current injection and exchange coupling from the spin-helically locked surface states of a topological insulator (TI) to evaluate possible non-volatile memory applications. We consider parallel transport in...