Presentation
20 August 2020 Picosecond spin orbit torque switching
Jon Gorchon, Kaushalya Jhuria, Julius Hohlfeld, Akshay Pattabi, Elodie Martin, Aldo Ygnacio Arriola Córdova, Xinping Shi, Roberto Lo Conte, Sebastien Petit-Watelot, Juan-Carlos Rojas-Sanchez, Gregory Malinowski, Stéphane Mangin, Aristide Lemaître, Michel Hehn, Jeffrey Bokor, Richard B. Wilson
Author Affiliations +
Abstract
Reducing energy dissipation while increasing speed in computation and memory is a long-standing challenge for spintronics research [1]. In the last 20 years, femtosecond lasers have emerged as a tool to control the magnetization in specific magnetic materials at the picosecond timescale [2]. However, the use of ultra-fast optics in integrated circuits and memories would require a major paradigm shift. An ultrafast electrical control of the magnetization [3] is far preferable for integrated systems. Here we demonstrate reliable and deterministic control of the out-of-plane magnetization of a 1 nm-thick Co layer with single 6 ps-wide electrical pulses that induce spin orbit torques on the magnetization. Due to the short duration of our pulses, we enter a counter-intuitive regime of switching where heat dissipation assists the reversal. These experiments prove that spintronic phenomena can be exploited on picosecond time-scales for full magnetic control.
Conference Presentation
© (2020) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jon Gorchon, Kaushalya Jhuria, Julius Hohlfeld, Akshay Pattabi, Elodie Martin, Aldo Ygnacio Arriola Córdova, Xinping Shi, Roberto Lo Conte, Sebastien Petit-Watelot, Juan-Carlos Rojas-Sanchez, Gregory Malinowski, Stéphane Mangin, Aristide Lemaître, Michel Hehn, Jeffrey Bokor, and Richard B. Wilson "Picosecond spin orbit torque switching", Proc. SPIE 11470, Spintronics XIII, 114701I (20 August 2020); https://doi.org/10.1117/12.2566199
Advertisement
Advertisement
KEYWORDS
Picosecond phenomena

Switching

Ultrafast phenomena

Magnetism

Spintronics

Control systems

Femtosecond phenomena

Back to Top