Ultrafast Mid-Infrared-Pump Optical-Probe Spectroscopy of Insulating La<sub>2</sub>CuO<sub>4</sub>

ORAL

Abstract

We report on the excitation of coherent acoustic phonons (CAP) in the Mott insulator La2CuO4 using intense ultrafast mid infrared laser pulses measured by changes in the reflectivity (at 800 nm) as a function of pump-probe delay. In this talk, we will discuss the possible mechanisms that enable a below gap CAP excitation. We also look toward implementing this more generally as a probe of low energy dynamics in quantum materials.

*Work supported by Army Research Office (ARO) under Grant No. MURI W911NF-16-1-0361.

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Presenters

  • Mustafa G Ali

    • University of California, San Diego

Authors

  • Mustafa G Ali

    • University of California, San Diego

  • Kelson Kaj

    • University of California, San Diego

  • Varun Ramaprasad

    • University of California, San Diego

  • Eli Zohglin

    • University of California, Santa Barbara

  • Steven J Gomez

    • University of California, Santa Barbara, Department of Materials
    • University of California, Santa Barbara

  • Stephen D Wilson

    • University of California, Santa Barbara

  • Richard D Averitt

    • University of California, San Diego