講演者：  S. P. Kruchinin 氏（Bogolyubov Institute for Theoretical Physics, Kiev, Ukraine）
日時： 　１月　１９日（木）　午後４時３０分から
場所： 青山学院大学　理工学部（相模原キャンパス）Ｌ棟６階　Ｌ６０３室

題目：「Two-gap superconductivity in MgB2」

要旨： 
The recent discovery of the superconductivity of MGB2 has attracted
great interest in multigap superconductivity. We use our two-band
model to explain the two coupled superconductivity gaps in MgB2. To
study the effect of the increased Tc in MgB2 due to enhanced interband
pairing scattering, we propose a two-chenal scenarion: a conventional
chenal connected with BCS mehanism in different zone and
unconventional chanel that describes the transfer or tunneling of a
Cooper pair between two bands. The critical temperature is defined and
the possibility of increasing the critical temperature is
demonstrated. We also investigate of nanosize two-gap
superconductivity using our model. 
 
---------------------------------
共催：　青山学院大学　２１世紀COEプログラム