Broadband terahertz spectroscopy in reflection of three-dimensional Dirac semimetal Cd3As2

POSTER

Abstract

Three-dimensional Dirac semimetal Cd3As2 has gained attention recently for its extremely mobile carriers and terahertz nonlinear response. Charge carriers around the rotational symmetry protected inverted band crossings are suggested to host novel features in low-energy electrodynamics, including but not limited to terahertz nonlinear effects. In this work, we discuss new results from dynamical broadband terahertz experiments on an MBE grown film of Cd3As2, suggesting a complex many-body interaction of electrons with other collective modes of the system.

* This work was sponsored in part by the UC San Diego Materials Research Science and Engineering Center (UCSan Diego MRSEC), supported by the National Science Foundation (Grant DMR-2011924).

Presenters

  • Varun Ramaprasad

    University of California San Diego

Authors

  • Varun Ramaprasad

    University of California San Diego

  • Yuan Zhang

    University of California, San Diego

  • Alexander C Lygo

    University of California, Santa Barbara

  • Sheikh Rubaiat Ul Haque

    University of California, San Diego

  • Kelson Kaj

    University of California, San Diego

  • Susanne Stemmer

    University of California, Santa Barbara

  • Richard D Averitt

    University of California, San Diego