D.A. Usanov  – Honored Scientist of RF, Dr.Sc.(Phys.-Math.), Professor, Head of Department of Solid State Physics,

Saratov State University named after N.G. Chernyshevsky

S.A. Nikitov – Corresponding Member of RAS, Director of Kotel'nikov IRE of RAS (Moscow) E-mail: nikitov@cplire.ru

A.V. Skripal – Dr.Sc.(Phys.-Math.), Professor, 

Department of Solid State Physics, Saratov State University named after N.G. Chernyshevsky

D.V. Ponomarev – Ph.D.(Phys.-Math.), Associate Professor, 

Department of Solid State Physics, Saratov State University named after N.G. Chernyshevsky E-mail: ponomarev87@mail.ru

O.M. Ruzanov – Post-graduate Student, 

Department of Solid State Physics, Saratov State University named after N.G. Chernyshevsky E-mail: zodiark@list.ru

I.O. Timofeev – Post-graduate Student, 

Department of Solid State Physics, Saratov State University named after N.G. Chernyshevsky E-mail: i.o.timofeew@yandex.ru