Magnetically operated nanorelay based on two single-walled carbon nanotubes filled with endofullerenes Fe@C20

Structural and energy characteristics of the smallest magnetic endofullerene Fe@C20 have been calculated using the density functional theory approach. The ground state of Fe@C20 is found to be a septet state, and the magnetic moment of Fe@C20 is estimated to be 8 Bohr magnetons. Characteristics of an (8,8) carbon nanotube with a single Fe@C20 inside are studied in the framework of the semiempirical approach. The scheme of a magnetic nanorelay based on cantilevered nanotubes filled with magnetic endofullerenes is elaborated. The proposed nanorelay is turned on as a result of bending of nanotubes by a magnetic force. Operational characteristics of such a nanorelay based on (8,8) and (21,21) nanotubes fully filled with Fe@C20 are estimated and compared to the ones of a nanorelay made of a (21,21) nanotube fully filled with experimentally observed (Ho3N)@C80 with the magnetic moment of 21 Bohr magnetons. Room temperature operation of (21,21) nanotube based nanorelays is shown.Comment: 18 pages, 9 figure

Математическое и компьютерное моделирование полупроводниковых систем различной размерности и элементов приборных структур на их основе

The article, in the form of a minireview, reflects the results of theoretical, and partly experimental investigations of the electrical, optical and magnetic phenomena in three-dimensional, two-dimensional, one-dimensional and zero-dimensional systems and elements of device structures made of germanium, silicon, carbon and other chemical elements carried out at the Faculty of Physics of Belarusian State University over the past 25 years.В статье (в форме мини-обзора) отражены результаты выполненных на физическом факультете Белорусского государственного университета за последние 25 лет теоретических (и отчасти экспериментальных) исследований электрических, оптических и магнитных явлений в трехмерных, двумерных, одномерных и нульмерных системах и элементах приборных структур из германия, кремния, углерода и других химических элементов