[1] Inst Basic Sci IBS, Ctr Theoret Phys Complex Syst, Daejeon 34126, South Korea
[2] Korea Univ Sci & Technol UST, Basic Sci Program, Daejeon 34113, South Korea
[3] Rzhanov Inst Semicond Phys, Siberian Branch Russian Acad Sci, Novosibirsk 630090, Russia
[4] Novosibirsk State Tech Univ, Novosibirsk 630073, Russia