%0 Journal Article %T Ballistic transport and boundary scattering in InSb/InxAl1-xSb mesoscopic devices %A A. M. Gilbertson %A M. Fearn %A A. Korm¨˘nyos %A D. E. Read %A C. J. Lambert %A M. T. Emeny %A T. Ashley %A S. A. Solin %A L. F. Cohen %J Physics %D 2010 %I arXiv %X We describe the influence of hard wall confinement and lateral dimension on the low temperature transport properties of long diffusive channels and ballistic crosses fabricated in an InSb/InxAl1-xSb heterostructure. Partially diffuse boundary scattering is found to play a crucial role in the electron dynamics of ballistic crosses and substantially enhance the negative bend resistance. Experimental observations are supported by simulations using a classical billiard ball model for which good agreement is found when diffuse boundary scattering is included. %U http://arxiv.org/abs/1009.3823v1