A class of spin injection-precession ultrafast nanodevices

TL;DR

This paper introduces a new class of ultrafast spin injection nanodevices, including an amplifier, frequency multiplier, and detector, utilizing spin precession controlled by a base current to achieve high-frequency operation.

Contribution

It presents a novel design of spin valve devices that operate at hundreds of gigahertz using spin injection and precession mechanisms.

Findings

Devices operate at frequencies up to several hundred GHz

Demonstrates control of emitter current via spin precession

Potential for ultrafast spintronic applications

Abstract

Spin valve ultrafast spin injection devices are described: an amplifier, a frequency multiplier, and a square-law detector. Their operation is based on injection of spin polarized electrons from one ferromagnet to another through a semiconductor layer and spin precession of the electrons in the semiconductor layer in a magnetic field induced by a (base) current in an adjacent nanowire. The base current can control the emitter current between the magnetic layers with frequencies up to several 100 GHz.