1. Laboratory of Physical
Bases of
Integrated Microelectronics, Institute of Semiconductor Physics, Siberian Branch of the Russian Academy of Sciences,
Novosibirsk 90, 630090, Russia
2. BCCRD, Key Laboratory of Functional
Crystals and Laser Technology, Technical Institute of Physics and Chemistry, CAS, P.O. Box 2711, Beijing 100190,
China
3. Graduate School of the Chinese Academy of Sciences, Beijing 100049, PR China
4. Laboratory of Crystal
Physics, Institute of Physics, Siberian
Branch of the Russian
Academy of Sciences, Krasnoyarsk 660036, Russia