Close this panel
Browse By Category
Browse By Presenter
Browse By Title
Browse By Rating
Close this panel

(A14) Temperature Dependence of Electron-Phonon Coupling and Its Correlation to Ultra Fast Demagnetization

John E. Clark
Science Teacher, Deltona High School

Abstract:

We report a systematic measurement of the electron-phonon thermalization timescales as a function of the sample base temperature in Ni using femtosecond electron diffraction. A strong temperature dependence has been observed in the vicinity of the Curie point. By assuming that ultrafast demagnetization completes well before the electron-phonon thermalization, this correlation between thermalization time and sample base temperature can be fit by a modified three temperature model describing the energy transfer among charge, spin and phonon subsystems. The results indicate that charges and spins can be characterized by a unified temperature during ultrafast lattice heating. *I was invited to be part of this research project as part of my Research Experience for Teachers program sponsored by The National High Magnetic Field Lab on the campus of Florida State University. I participated in the experimentation during the Summer of 2009. The paper on this experiement was published in Physical Review B 81, 220301 (R) (2010).

Rate This Poster

Stuff for notes
Stuff for Message board

Share Poster

Help

Technical Support

(877) 426-6323

support@meetingproceedings.com

Feedback

SUBMIT FEEDBACKfeedback icon

We really appreciate your feedback on the eventScribe website. We use the data to improve the experience and simplify the process for users like you.

Comments


Log In / Sign Up



Log In   Sign Up
Access your bookmarked poster and notes by logging in ...   Sign up to take notes on poster, bookmark poster, and submit feedback.
 
 
  Lost your access key?      
   
You need to be logged in to bookmark posters, save notes, or rate posters.