Imaging currents in HgTe quantum wells in the quantum spin Hall regime
K. C. Nowack, E. M. Spanton, M. Baenninger, M. Koenig, J. R. Kirtley, B. Kalisky, C. Ames, Philipp Leubner, C. Bruene, H. Buhmann, L. W. Molenkamp, D. Goldhaber-Gordon and K. A. Moler