CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 9931 > Article
Presentation
4 November 2016 Tracking the ultrafast spin-lattice motion in FePt nanoparticles (Conference Presentation)
Hermann A. Dürr
Author Affiliations +
Proceedings Volume 9931, Spintronics IX; 993119 (2016) https://doi.org/10.1117/12.2239423
Event: SPIE Nanoscience + Engineering, 2016, San Diego, California, United States
Abstract
The prospect of manipulating materials’ properties with femtosecond laser pulses, the shortest stimuli known to mankind, has fascinated researchers for decades. Discoveries of femtosecond demagnetization of ferromagnets and all-optical magnetic switching are fueled by the demand for faster information storage and processing. However, understanding when and how optical energy delivered into band electrons is transferred to spin and lattice degrees of freedom remains among the most challenging and important topics in condensed matter physics. Here we demonstrate for FePt nanoparticles how to disentangle these complex energy pathways. We show that femtosecond demagnetization launches a highly anisotropic ultrafast lattice motion characterized by a- and b-axis expansion and c-axis contraction. Picosecond lattice stress from non-equilibrium phonons increases the a,b-lattice spacing while invar-like near-zero c-axis expansion persists for tens of picoseconds. Our work establishes for a metallic system the existence of intimate spin, electron and lattice coupling, a hallmark usually reserved for strongly correlated electron systems.
Conference Presentation
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Hermann A. Dürr "Tracking the ultrafast spin-lattice motion in FePt nanoparticles (Conference Presentation)", Proc. SPIE 9931, Spintronics IX, 993119 (4 November 2016); https://doi.org/10.1117/12.2239423
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
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
Members: $17.00
Non-members: $21.00 ADD TO CART
PROCEEDINGS
 PRESENTATION
WATCH
PRESENTATION SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
KEYWORDS
Electrons
Femtosecond phenomena
Nanoparticles
Ultrafast phenomena
Picosecond phenomena
Condensed matter physics
Data storage
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top