Heat-induced magnetization dynamics due to ultrafast exchange scattering with itinerant electrons

Alexander Baral; Svenja Vollmar; Hans Christian Schneider

doi:10.1117/12.2208628

14 March 2016 Heat-induced magnetization dynamics due to ultrafast exchange scattering with itinerant electrons

Alexander Baral, Svenja Vollmar, Hans Christian Schneider

Proceedings Volume 9746, Ultrafast Phenomena and Nanophotonics XX; 97461H (2016) https://doi.org/10.1117/12.2208628
Event: SPIE OPTO, 2016, San Francisco, California, United States

Abstract

We review a recently introduced simple model that describes magnetization dynamics in a system consisting of localized and itinerant carriers which are coupled by an antiferromagnetic exchange interaction. By also introducing a Stoner-like mean-field splitting in the itinerant carrier system, the model is intended to capture some important aspects of the electronic structure and the magnetization dynamics of ferrimagnets that involve itinerant carriers, such as GdFe(Co). In the framework of this model one can describe microscopically scattering dynamics due to the exchange interaction as well as coupling to phonons. We review some details of this model and show how it explains heat-induced magnetic switching in two-sublattice ferrimagnets. Further, we discuss the inuflence of angular momentum exchange with the environment, and present results for the magnetization dynamics that result from excitation above the compensation temperature.

Citation Download Citation

Alexander Baral, Svenja Vollmar, and Hans Christian Schneider "Heat-induced magnetization dynamics due to ultrafast exchange scattering with itinerant electrons", Proc. SPIE 9746, Ultrafast Phenomena and Nanophotonics XX, 97461H (14 March 2016); https://doi.org/10.1117/12.2208628

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available