Dynamics of spin valves investigated using Magneto-Optical Kerr Effect Spectroscopy

ORAL

Abstract

Through an all-optical approach, we are investigating the spin dynamics in different spin torque based structures. Using pump-probe Time-Resolved Magneto-Optical Kerr Effect (TR-MOKE) spectroscopy, we are able to monitor the ultrafast magnon propagation on a sub-picosecond timescale as well as the longer lived oscillations and demagnetization. This represents a recent efforts to realize magnon induced spin torque using an all optical method.

*This research at USF is supported by the National Science Foundation, Division of Electrical, Communications and Cyber Systems under grant number: 1231929. The work was done in part at the NHMFL, Tallahassee, FSU under grants: DMR-1229217, DMR-1157490

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Authors

  • Christopher Stevens

    • University of South Florida
    • Univ of South Florida

  • Jagannath Paul

    • University of South Florida
    • Univ of South Florida

  • Prasenjit Dey

    • University of South Florida
    • Univ of South Florida

  • Casey Miller

    • Rochester Institute of Technology

  • Stephen McGill

    • National High Magnetic Field Laboratory
    • National High Magnetic Field Lab, FSU
    • NHMFL, Florida
    • National High Magnetic Field Lab. \& Dept. Physics, Florida State Univ.
    • National High Magnetic Field Lab, Florida state University
    • National High Magnetic Field Lab, florida

  • Denis Karaiskaj

    • University of South Florida
    • Univ of South Florida