Browsing by Author "Schilling, Micha Benjamin"

Filter results by typing the first few letters
Now showing 1 - 2 of 2
  • Thumbnail Image
    ItemOpen Access
    Fractional power-law intraband optical conductivity in the low-dimensional Dirac material CaMnBi2
    (2021) Schilling, Micha Benjamin; Wang, C. X.; Shi, You-Guo; Kremer, Reinhard Karl; Dressel, Martin; Pronin, Artem V.
    We studied the broadband optical conductivity of CaMnBi2, a material with two-dimensional Dirac electronic bands, and found that both components of the intraband conductivity follow a universal power law as a function of frequency at low temperatures. This conductivity scaling differs from the Drude(-like) behavior, generally expected for free carriers, but matches the predictions for the intraband response of an electronic system in a quantum critical region. Since no other indications of quantum criticality are reported for CaMnBi2 so far, the cause of the observed unusual scaling remains an open question.
  • Thumbnail Image
    ItemOpen Access
    Optical studies on Dirac and Weyl semimetals
    (2018) Schilling, Micha Benjamin; Dressel, Martin (Prof. Dr.)