Christian Back - Optical and Electrical Detection of Spin Orbit Fields

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Christian Back
September 17, 2021
3:30PM - 4:30PM
Location
Zoom Webinar

Date Range
Add to Calendar 2021-09-17 15:30:00 2021-09-17 16:30:00 Christian Back - Optical and Electrical Detection of Spin Orbit Fields         Series Title: Spin Dynamics in Molecules and Materials   Title: Optical and Electrical Detection of Spin Orbit Fields   Christian Back, Technical University of Munich   Abstract: Interfacial spin-orbit fields enable the manipulation of the magnetization through in-plane charge currents in e.g. bilayers of ferromagnets and heavy metals. To obtain a detailed understanding of the origin of the acting spin orbit fields – i.e. the spin Hall effect vs. the inverse spin galvanic effect – one needs to be able to unambiguously separate field-like and damping like torques. We use a ferromagnet/semiconductor model system to determine spin orbit fields using optical and electrical detection techniques. In this talk I will review the mechanisms we have identified to be responsible for exciting magnetization dynamics in this model system and show how the measurement of the time resolved magnetization trajectory may further provide information concerning the underlying microscopic mechanisms.      Join Zoom Meeting https://osu.zoom.us/j/94478022372?pwd=dGR6WTdkWEltekZGZUJ2TmRGVEYrUT09 Meeting ID: 944 7802 2372 Password: 793204     SUBSCRIBE to our email list here.   If you require an accommodation such as live captioning or interpretation to participate in this event, please contact Jessi Middleton at middleton.85@osu.edu. Requests made five business day prior to the event will generally allow us to provide seamless access, but the university will make every effort to meet requests made after this date. Zoom Webinar Department of Physics physics@osu.edu America/New_York public
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Series Title: Spin Dynamics in Molecules and Materials

 

Title: Optical and Electrical Detection of Spin Orbit Fields

 

Christian Back, Technical University of Munich

 

Christian Back

Abstract: Interfacial spin-orbit fields enable the manipulation of the magnetization through in-plane charge currents in e.g. bilayers of ferromagnets and heavy metals. To obtain a detailed understanding of the origin of the acting spin orbit fields – i.e. the spin Hall effect vs. the inverse spin galvanic effect – one needs to be able to unambiguously separate field-like and damping like torques. We use a ferromagnet/semiconductor model system to determine spin orbit fields using optical and electrical detection techniques. In this talk I will review the mechanisms we have identified to be responsible for exciting magnetization dynamics in this model system and show how the measurement of the time resolved magnetization trajectory may further provide information concerning the underlying microscopic mechanisms. 

 

 

Join Zoom Meeting
https://osu.zoom.us/j/94478022372?pwd=dGR6WTdkWEltekZGZUJ2TmRGVEYrUT09

Meeting ID: 944 7802 2372
Password: 793204

 

 

SUBSCRIBE to our email list here.

 

If you require an accommodation such as live captioning or interpretation to participate in this event, please contact Jessi Middleton at middleton.85@osu.edu. Requests made five business day prior to the event will generally allow us to provide seamless access, but the university will make every effort to meet requests made after this date.