Spatially Resolved Study of Backscattering in the Quantum Spin Hall State

Markus König, Matthias Baenninger, Andrei G. F. Garcia, Nahid Harjee, Beth L. Pruitt, C. Ames, Philipp Leubner, Christoph Brüne, Hartmut Buhmann, Laurens W. Molenkamp, and David Goldhaber-Gordon* Department of Physics, Stanford University, Stanford, California 94305, USA Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA Department of Electrical Engineering, Stanford University, Stanford, California 94305, USA Department of Mechanical Engineering, Stanford University, Stanford, California 94305, USA Physikalisches Institut (EP3), Universität Würzburg, Am Hubland, 97074 Würzburg, Germany (Received 16 November 2012; published 22 April 2013)