Time-resolved measurements of electronically tunable magnetism in LaAlO<sub>3</sub>/SrTiO<sub>3</sub>

POSTER

Abstract

Tunable magnetism at the the LaAlO3/SrTiO3 (LAO/STO) has been observed, but its mechanism remains unknown. Previous experimental results, such as an observed Kondo effect[1] and magnetic force microscopy (MFM) measurements[2], confirm electrically-tunable magnetism in LAO/STO at room temperature. While optical probing further characterizes this magnetic behavior as optically controllable[3], studies of the dynamics of this magnetization remain incomplete. To resolve this transition, we take advantage of magneto-optical Kerr effect (MOKE) microscopy. By by pump-and-probe optical measurements, the behavior of the system during transition can be characterized. Understanding this transition as it evolves will reveal the mechanism that controls the property and enrich our understanding of both the interface and this exotic magnetism.


[1] K. Han, et al. Sci Rep. 6, 25455 (2016).
[2] F. Bi, et al. Nat Commun 5, 5019 (2014).
[3] W. Rice, et al. Nature Mater 13, 481–487 (2014).

*JL acknowledges a Vannevar Bush Faculty Fellowship (ONR N00014-15-1-2847) and ONR N00014-20-1-2481. Work at University of Wisconsin-Madison supported by the Air Force Office of Scientific Research FA9550-15-1-0334 and the Gordon and Betty Moore Foundation’s EPiQS Initiative, Grant GBMF9065 to Chang-Beom Eom.

Presenters

  • Erin Fierro

    • Department of Physics and Astronomy, University of Pittsburgh

Authors

  • Erin Fierro

    • Department of Physics and Astronomy, University of Pittsburgh

  • Kitae Eom

    • Materials Science and Engineering, University of Wisconsin-Madison
    • Department of Materials Science and Engineering, University of Wisconsin-Maddison
    • Department of Materials Science and Engineering, University of Wisconsin
    • Department of Materials Science Engineering, University of Wisconsin-Madison
    • Department of Materials Science and Engineering, University of Wisconsin-Madison,, University of Wisconsin
    • Material Science and Engineering, University of Wisconsin-Madison
    • University of Wisconsin-Madison
    • University of Wisconsin-Maddison

  • Chang-Beom Eom

    • Materials Science and Engineering, University of Wisconsin-Madison
    • University of Wisconsin, Madison
    • Department of Materials Science and Engineering, University of Wisconsin-Maddison
    • Department of Materials Science and Engineering, University of Wisconsin
    • Department of Materials Science Engineering, University of Wisconsin-Madison
    • Department of Materials Science and Engineering, University of Wisconsin-Madison,, University of Wisconsin
    • Material Science and Engineering, University of Wisconsin-Madison
    • University of Wisconsin-Madison
    • University of Wisconsin-Maddison
    • University of Wisconsin - Madison
    • University of Wisconsin Madison
    • Department of Materials Science and Engineering, University of Wisconsin-Madison

  • Patrick R Irvin

    • Physics and Astronomy, University of Pittsburgh
    • University of Pittsburgh
    • Department of Physics and Astronomy, University of Pittsburgh
    • Department of Physics & Astronomy, University of Pittsburgh

  • Jeremy Levy

    • Physics and Astronomy, University of Pittsburgh
    • University of Pittsburgh
    • Department of Physics and Astronomy, University of Pittsburgh
    • Department of Physics & Astronomy, University of Pittsburgh