Decoding the Mechanism and Coherent Control of Ultrafast Magnetism

ORAL

Abstract

Coherent manipulation of quantum material phases via lattice degree of freedom presents a versatile route for exploring hidden phases and enabling advanced functionalities. While ultrafast switching on of a millisecond time-scale metastable magnetization has been demonstrated in FePS3, its underlying mechanism has yet to be fully understood. Here, we employed terahertz double-pump experiments and two-dimensional terahertz spectroscopy to decode the phonon-mediated control of magnetism in FePS3. Moreover, we demonstrate coherent switching on and off of the metastable state, enabling applications such as high-performance magnetic storage.

*We acknowledge the support from the US Department of Energy, Materials Science and Engineering Division, Office of Basic Energy Sciences (BES DMSE) (data taking and analysis), and Gordon and Betty Moore Foundation's EPiQS Initiative grant GBMF9459 (instrumentation and manuscript writing).

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Presenters

  • Tianchuang Luo

    • Massachusetts Institute of Technology

Authors

  • Tianchuang Luo

    • Massachusetts Institute of Technology

  • Honglie Ning

    • Massachusetts Institute of Technology
    • MIT

  • Batyr Ilyas

    • Massachusetts Institute of Technology
    • University of California Berkeley

  • Alexander von Hoegen

    • Massachusetts Institute of Technology

  • Emil V Boström

    • Max Planck Institute for the Structure & Dynamics of Matter
    • Max Planck Institute for the Structure and Dynamics of Matter

  • Jaena Park

    • Seoul National University

  • Junghyun Kim

    • Seoul National University

  • Je-Geun Park

    • Seoul National University
    • Seoul Natl Univ

  • Dominik M Juraschek

    • Eindhoven University of Technology

  • Angel Rubio

    • Max Planck Institute for the Structure & Dynamics of Matter
    • Max Planck Institute for the Structure & Dynamics of Matter; Flatiron Institute's Center for Computational Quantum Physics (CCQ) & Initiative for Computational Catalysis (ICC)

  • Nuh Gedik

    • Massachusetts Institute of Technology