Distribution of zinc-blende twins and wurtzite segments in GaAs nanowires probed by X-ray nanodiffraction

作者：Biermanns Andreas^*; Carbone Dina; Breuer Steffen; Jacques Vincent L R; Schulli Tobias; Geelhaar Lutz; Pietsch Ullrich

来源：Physica Status Solidi-Rapid Research Letters, 2013, 7(10): 860-863.

DOI：10.1002/pssr.201307246

• nanowires
• X-ray diffraction
• GaAs
• crystal structure

We study by X-ray nanodiffraction the statistical distribution of the two possible twinned zinc-blende (ZB) orientations as well as the occurrence of the wurtzite structure within single GaAs nanowires (NWs) grown by molecular beam epitaxy on Si(111). A fast scanning scheme allowed to perform diffraction experiments on 160 individual NWs. We find that although on average the two ZB orientations show a similar abundance, in 90% of all NWs one ZB orientation dominates and little twinning is observed within each individual NW.

• 出版日期2013-10