NW_blinkingWe study the influence of surface acoustic waves (SAWs) on the optical emission properties of single semiconductor nanowires (NWs). We employ the SAW (i) as a fast switch to turn on and off the light emission1 (see figure), (ii) to transport charge carriers along the NW axis or (iii) to control QDs2 and QD-like emission centers3 in heterostructure nanowires.

This work is a collaboration with the groups of Gregor Koblmüller, Jonathan Finley, Alexander Holleitner and Gerhard Abstreiter at the Walter Schottky Institut, TU München

This work is supported by Deutsche Forschungsgemeinschaft via Research Grant KR3790/6-1 and the the Cluster of Excellence Nanosystems Initiative Munich.

Key publication:

  1. J. B. Kinzel et al., "The Native Material Limit of Electron and Hole Mobilities in Semiconductor Nanowires", ACS Nano 10, 4942-4953 (2015) [Link]
  2. J. B. Kinzel et al., "Directional and dynamic modulation of the optical emission of an individual GaAs nanowire using Surface Acoustic Waves", Nano Letters 11, 1512-1517 (2011) [Link] [Press release NIM]
  3. M. Weiß et al., "Dynamic acoustic control of individual optically active quantum dot-like emission centers in heterostructure nanowires", Nano Letters 14, 2256-2264 (2014) [Link]
  4. M. Weiß et al., "Radio frequency occupancy state control of a single nanowire quantum dot", Journal of Physics D: Applied Physics 47, 394011 (2014) -- Special Issue article on Nanowires [Link]