Tracking Ultrafast Carrier Dynamics in Single Semiconductor Nanowire Heterostructures M.A. Seo, J. Yoo, D.E. Perea, S. A. Dayeh, S. T. Picraux, A.J. Taylor and R.P. Prasankumar EPJ Web of Conferences, 41 (2013) 04030 Published online: 13 March 2013 DOI: 10.1051/epjconf/20134104030