We report the observation of boundary scattering in damage-free wires made from InAs/GaSb quantum wells. Fabrication of very long wires has enabled us to observe boundary scattering contribution to the resistivity of these wires both with and without a magnetic field. A very well-defined region of suppression of both field-induced and zero-field boundary scattering was observed. These effects were seen to become more pronounced as the width of the wires was reduced. Differences from boundary scattering in GaAs/AlGaAs heterostructure wires are pointed out. Results of a study of the dependence of boundary scattering on temperature are also described.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering
- Materials Chemistry