Tracing Photodetection Of THz Frequency Light In InAs Nanowire Field Effect Transistors Via Near-field THz NanoscopyKeynote (MM13)
Thu, 12 Nov 2020 06:15pm to 06:45pm
We trace the photodetection mechanisms at THz frequencies in InAs nanowire (NW) field-effect transistors (FET) by means of a combination of two near-field techniques: photocurrent nanoscopy and detectorless scattering near-field microscopy. By mapping local THz photocurrents with nanoscale (15 nm) spatial resolution we demonstrate the activation of photo-thermoelectric and bolometric effects under THz illumination of these room temperature nanodetectors.
Authors: Pogna, Eva Arianna Aurelia; Asgari, Mahdi; Zannier, Valentina; Sorba, Lucia; Viti, Leonardo; Vitiello, Miriam Serena
NEST, CNR - Istituto Nanoscienze and Scuola Normale Superiore