Pedersen, Kjeld, <p class="MsoNormal" style="text-align: center; mso-layout-grid-align: none; text-autospace: none;"><span style="font-size: 11.0pt; mso-font-kerning: 0pt; mso-ansi-language: EN-GB;">Department of Physics &amp; Nanotechnology, Aalborg University, Skjernvej, Denmark