Determination of Polarization-Fields Across Polytype Interfaces in InAs Nanopillars (pages 1052–1057)
Luying Li, Zhaofeng Gan, Martha R. McCartney, Hanshuang Liang, Hongbin Yu, Wan-Jian Yin, Yanfa Yan, Yihua Gao, Jianbo Wang and David J. Smith
Version of Record online: 4 NOV 2013 | DOI: 10.1002/adma.201304021
Polarization fields within InAs nanopillars with zincblende(ZB)/wurtzite(WZ) polytype stacking are quantified. The displacement of charged ions inside individual tetrahedra of WZ regions is measured at the atomic scale. The variations of spontaneous polarization along the interface normal are related to strain at interfaces of different polytypes. Thus, direct correlation between local atomic structure and electric properties is demonstrated.