Electronic properties of topological rough nanowires for thermoelectrical performance

We study the electronic states in topological nanowires of narrow-gap semiconductors, such as PbTe or SnTe, with rough surfaces, using a continuous two-band model. calculate subband structure and identify conducting located at surface nanowire. In addition, novel approach to nanowire demonstrates that are mostly confined widest areas This effect leads flattening subbands, thus raising effective mass carriers. Finally, we analyze thermoelectric properties nanowires. The reduction radius causes noticeable enhancement efficiency due phonon scattering, expected. However, also observe appearance can play detrimental role, reducing efficiency. conclude that, addition nanostructuring, modulation nanowires, which partially suppress conduction states, may be potential strategy improve response semiconductor