1. B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences ofUkraine, 47 Nauky Ave., Kharkiv 61103, Ukraine
2. W. Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, Wroclaw 50–950, Poland
3. National Research Tomsk Polytechnic University, 30 Lenin Ave., Tomsk 634050, Russia
4. Institute of Strength Physics and Materials Science of SB RAS, 2/4 Academicheskii Ave., Tomsk 634055, Russia
5. Boreskov Institute of Catalysis, 5 Lavrentiev Ave., Novosibirsk 630090, Russia
6. National Research Tomsk State University, 36 Lenin Ave., Tomsk 634050, Russia