1. Kirensky Institute of Physics, Krasnoyarsk 660036, Russia
2. International Laboratory of High Magnetic Fields and Low Temperatures, Wroclaw 53-421, Poland
3. Siberian Federal University, Krasnoyarsk 660041, Russia
4. Boreskov Institute of Catalysis, Novosibirsk 630090, Russia
5. Novosibirsk State University, Novosibirsk 630090, Russia