http://dspace.nbuv.gov.ua:80/handle/123456789/117373 2026-04-16T06:36:07Z http://dspace.nbuv.gov.ua:80/handle/123456789/120898 Пpедметный указатель тома 32 за 2006 год Пpедметный указатель составлен в соответствии с классификационной схемой PACS (Physics and Astronomy Classification Scheme), pазpаботанной в Амеpиканском институте фізики. 2006-01-01T00:00:00Z http://dspace.nbuv.gov.ua:80/handle/123456789/120897 Авторский указатель тома 32 за 2006 год 2006-01-01T00:00:00Z http://dspace.nbuv.gov.ua:80/handle/123456789/120896 On the possible reason for superconductivity strengthening in multiwall carbon nanotubes Gaididei, Yu.B.; Loktev, V.M. Basing on the structural peculiarity of two-layer graphene which consists of translational and energetical nonequivalency of carbon atoms from different sublattices, it is shown that the density of long-wave electronic states at the Fermi level is finite (in contrast to the monolayer graphene). It is suggested that the same may be the reason why the critical temperature of superconducting transition in multiwall nanotubes more than ten times higher than in single-wall nanotubes. 2006-01-01T00:00:00Z http://dspace.nbuv.gov.ua:80/handle/123456789/120895 Exciton condensation in quantum wells Sugakov, V.I. The theory of exciton condensation is given in two-dimensional systems under suggestion that condensation occurs in really space and condensed phase arises as a result of an attractive interaction between excitons. Due to the finite value of exciton lifetime the sizes of exciton condensed phase regions are restricted and the condensed phase appears in a form of system of islands amid exciton gas. The joint solution of kinetic equations for island size and exciton diffusion equation in the space between islands has been obtained. The theory is applied to explanation of experimental manifestation of condensed phase in quantum wells and also to explanation of the periodical fragmentation, which was observed in luminescence spectrum from a ring around a laser spot in a crystal with double quantum wells. For such explanations the theory does not require the exciton Bose–Einstein condensation. 2006-01-01T00:00:00Z