Title :
Origin of non-drude conductivity in the THz spectra of nanogranular semiconductors
Author :
Kadlec, Filip ; Kadlec, Christelle ; Wagner, Thomas ; Frumar, Miloslav ; Kasap, Safa ; Shimakawa, Koichi
Author_Institution :
Inst. of Phys., Prague, Czech Republic
Abstract :
We present a microscopic model, describing the THz conductivity of semiconductors with nanosized grains. The model combines free intra-grain motion and hopping on grain boundaries, and it is verified by fitting experimental spectra of phase-change materials and extracting the underlying parameters.
Keywords :
antimony compounds; germanium compounds; grain boundaries; grain size; hopping conduction; nanostructured materials; terahertz wave spectra; THz conductivity; THz spectra; fitting experimental spectra; grain boundaries; hopping conduction; intragrain motion; microscopic model; nanogranular semiconductor; nanosized grains; nonDrude conductivity; phase-change materials; Conductivity; Grain size; Microscopy; Phase change materials; Semiconductor device modeling; Tunneling;
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on
Conference_Location :
Tucson, AZ
DOI :
10.1109/IRMMW-THz.2014.6956446
