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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.

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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