Institution: | (1) Max-Planck-Institute of Microstructure Physics, Weinberg 2, 06120 Halle, Germany;(2) Department of Physics, Crystal Physics Group, Martin-Luther-University Halle-Wittenberg, 06120 Halle, Germany;(3) Institute of Experimental Physics, Otto-von-Guericke-University Magdeburg, 39016 Magdeburg, Germany |