Poster: Identification of Weyl Semimetals using Plasmonic Responses from Fourier Transform Infrared Spectroscopy*

With increasing interests in exploring the extravagant capabilities and potential utilizations of Weyl Semimetals (WSM's) amongst other topological materials, there arises a need for a novel and rapid identification mechanism for realization of the characteristic chiral fermions present in these materials. The current experimental technique for determining WSM's is laser-based angle-resolved photoemission spectroscopy. It has been recently theorized that WSM's can be identified through the excitation of Surface Plasmon Polaritons (SPP's) and mapping out the resulting dispersion curves upon different orientations. In this work, we employ Fourier Transform Infrared (FTIR) spectroscopy along with the launching of SPP's through the Kretschmann geometrical configuration to extract an expeditious broadband dispersion curve from near infrared to far infrared regions. Along with that, we implement FTIR Spectrometry to obtain the dielectric function of materials through a pseudoellipsometric technique to then be used in current modeling software to computationally verify and further explore these WSM's.