Journal
APPLIED PHYSICS LETTERS
Volume 123, Issue 5, Pages -Publisher
AIP Publishing
DOI: 10.1063/5.0167151
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Spintronics aims to extend electronic functionalities by utilizing the spin of electrons as information carrier, and its speed needs to be pushed to femtosecond time scales and terahertz frequencies to be competitive and compatible with other information carriers. Ultrafast and terahertz spintronics utilize optical and electromagnetic pulses to induce spin torque and transport, and provide new insights and applications for spintronics. This Special Topic Collection aims to present the newest developments and future trends in the field of ultrafast and terahertz spintronics.
Spin-based electronics (spintronics) aims at extending electronic functionalities, which rely on the electron charge as information carrier, by the spin of the electron. To make spintronics competitive and compatible with other information carriers like photons and electrons, their speed needs to be pushed to femtosecond time scales and, thus, terahertz frequencies. In ultrafast and terahertz spintronics, femtosecond optical and terahertz electromagnetic pulses are used to induce spin torque and spin transport and to monitor the subsequent time evolution. The two approaches, sometimes referred to as femto-magnetism and terahertz magnetism, have provided new, surprising, and relevant insight as well as applications for spintronics. Examples include the ultrafast optical switching of magnetic order and the generation of broadband terahertz electromagnetic fields. This APL Special Topic Collection is dedicated to provide a platform for the newest developments and future trends in the very active, dynamic, and exciting research field of ultrafast and terahertz spintronics.
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