Coherent current states in a two-band superconductor
Homogeneous current states in thin films and Josephson current in superconducting microbridges are studied within the frame of a two-band Ginzburg–Landau theory. By solving the coupled system of equations for two order parameters the depairing current curves and Josephson current-phase relation ar...
Збережено в:
| Дата: | 2007 |
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| Автори: | , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2007
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| Назва видання: | Физика низких температур |
| Теми: | |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/127811 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Coherent current states in a two-band superconductor / Y.S. Yerin, A.N. Omelyanchouk // Физика низких температур. — 2007. — Т. 33, № 5. — С. 538-545. — Бібліогр.: 36 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | Homogeneous current states in thin films and Josephson current in superconducting microbridges are
studied within the frame of a two-band Ginzburg–Landau theory. By solving the coupled system of equations
for two order parameters the depairing current curves and Josephson current-phase relation are calculated
for different values of phenomenological parameters and . Coefficients and describe the coupling
of order parameters (proximity effect) and their gradients (drag effect), respectively. For definite values of
parameters the dependence of current j on superfluid momentum q contains local minimum and corresponding
bi-stable states. It is shown that the Josephson microbridge from two-band superconductor can demonstrate
-junction behavior. |
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