Optical Characterization of AgCrP2S6

ORAL

Abstract

AgCrP2S6 is an interesting 2D material that features chains of silver and chromium atoms that behave like 1D materials. Below 21 K, the chromium atoms order antiferromagnetically, making it a unique magnetic system. The goal of the project is to determine the band gap of this semiconductor. Despite the difficulty of using optical probes on ultra-thin materials, we have developed methods to calculate the transmission, reflectivity, and photoluminescence in order to calculate photoabsorption. We have measured the band gap to be 1.3 eV in excellent agreement with DFT calculations.

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Presenters

  • Deepika O Kumawat

    Mount Holyoke College

Authors

  • Deepika O Kumawat

    Mount Holyoke College

  • Joshua J Sanchez

    Massachusetts Institute of Technology

  • Connor A Occhialini

    Massachusetts Institute of Technology

  • Riccardo Comin

    Massachusetts Institute of Technology, MIT

  • Eugene Park

    Massachusetts Institute of Technology, MIT

  • Zdeněk Sofer

    University of Chemistry and Technology Prague, University of Chemistry and Technology, Prague, Institute of Chemistry and Technology, Prague, .

  • Prineha Narang

    College of Letters and Science, University of California, Los Angeles (UCLA), CA, USA., University of California Los Angeles, College of Letters and Science, University of California, Los Angeles (UCLA), UCLA, University of California, Los Angeles, College of Letters and Science, University of California, Los Angeles, Harvard University

  • Frances M Ross

    Massachusetts Institute of Technology, Massachusetts Institute of Technology MI