Affiliation: | 1. Institute of Microelectronics Technology and High Purity Materials, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia 2. Institute for Nanometre Optics and Technology, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Berlin, 12489, Germany 3. Laboratoire de Physique des Solides, Université Paris-Sud, Orsay Cedex, France
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