Alexei L. Ivanov School of Physics and Astronomy Cardiff University Employment History: Research staff member of Physics Department of Moscow State University, 1984-1991 Research associate of Institute for Theoretical Physics, University of Frankfurt am Main, 1991-1997 Research associate of Theory Condensed Matter Group, Cavendish Laboratory, Department of Physics, University of Cambridge, 1998-1999 Senior Lecturer, Department of Physics and Astronomy, Cardiff University, 1999-2003 Personal Chair - Professor, School of Physics and Astronomy, Cardiff University,