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ULTRAFAST MID-INFRARED PUMP-OPTICAL PROBE SPECTROSCOPY OF INSLULATING La<sub>2</sub>CuO<sub>4</sub>

ORAL

Abstract

We report some further progress on the excitation of coherent longitudinal acoustic phonons (CLAPs) 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. This talk seeks to motivate the possible mechanisms that enable and resolve a below gap CLAP excitation. More generally, we also look toward implementing this coherent population of longitudinal acoustic phonons - a strain wave - as a reporter of low energy dynamics in quantum materials.

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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, University of California San Diego

  • Eli Zohglin

    University of California, Santa Barbara

  • Steven J Gomez

    University of California, Santa Barbara

  • Stephen D Wilson

    University of California, Santa Barbara

  • Richard D Averitt

    University of California, San Diego