Communications of the ACM
New C Riverside Research Advances Spintronics Technology
Univerity of California, Riverside researchers have developed methods to detect signals from spintronic components made of low-cost metals and silicon.
Credit: UCR Today
Researchers at the University of California, Riverside have advanced spintronics via new methods to detect signals from spintronic components made of inexpensive metals and silicon.
One technique involves detecting the spin currents in a simple two-layer sandwich of silicon and a nickel-iron alloy known as Permalloy, produced with the widely used electronics manufacturing processes called sputtering. The team heated one side of the bi-layer sandwich to create a temperature gradient, generating an electrical voltage caused by the spin-Seebeck effect; the resulting "spin current" in the bi-layer was detectable thanks to the inverse spin-Hall effect.
They also demonstrated that they could generate in-silicon antiferromagnetism, in which the magnetic poles of the atoms are magnetically oriented in opposite directions--a key step toward commercial spintronics.
"These results bring the ubiquitous Si (silicon) to forefront of spintronics research and will lay the foundation of energy-efficient Si spintronics and Si spin caloritronics devices," the team predicts.
From UCR Today
View Full Article
Abstracts Copyright © 2018 Information Inc., Bethesda, Maryland, USA
No entries found