On the self-consistent theory of Josephson effect in ballistic superconducting microconstrictions
The microscopic theory of current-carrying states in the ballistic superconducting microchannel is presented. The effects of the contact length L on the Josephson current are investigated. For the temperatures T close to the critical temperature Tc the problem is treated self-consistently, with allo...
Збережено в:
| Дата: | 1999 |
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| Автори: | , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
1999
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| Назва видання: | Физика низких температур |
| Теми: | |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/139331 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | On the self-consistent theory of Josephson effect in ballistic superconducting microconstrictions / M. Zareyan, Yu.A. Kolesnichenko, A.N. Omelyanchouk // Физика низких температур. — 1999. — Т. 25, № 11. — С. 1154-1160. — Бібліогр.: 14 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
irk-123456789-139331 |
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dspace |
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irk-123456789-1393312018-06-21T03:07:02Z On the self-consistent theory of Josephson effect in ballistic superconducting microconstrictions Zareyan, M. Kolesnichenko, Yu.A. Omelyanchouk, A.N. Свеpхпpоводимость, в том числе высокотемпеpатуpная The microscopic theory of current-carrying states in the ballistic superconducting microchannel is presented. The effects of the contact length L on the Josephson current are investigated. For the temperatures T close to the critical temperature Tc the problem is treated self-consistently, with allowance for the distribution of the order parameter D(r) inside the contact. The closed integral equation for D in strongly inhomogeneous microcontact geometry (L< and ~x₀ , where x₀ is the coherence length at T=0) replaces the differential Ginzburg-Landau equation. The critical current Ic(L) is expressed in terms of the solution of this integral equation. The limiting cases of L<<x₀ and L>>x₀ are considered. With increasing length L, the critical current decreases, although the ballistic Sharvin resistance of the contact remains the same as at L=0. For ultrashort channels with L< and ~ aD (aD~nF/wD , where w D is the Debye frequency) the corrections for the value of the critical current Ic(L=0) are sensitive to the strong-coupling effects. 1999 Article On the self-consistent theory of Josephson effect in ballistic superconducting microconstrictions / M. Zareyan, Yu.A. Kolesnichenko, A.N. Omelyanchouk // Физика низких температур. — 1999. — Т. 25, № 11. — С. 1154-1160. — Бібліогр.: 14 назв. — англ. 0132-6414 http://dspace.nbuv.gov.ua/handle/123456789/139331 en Физика низких температур Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| topic |
Свеpхпpоводимость, в том числе высокотемпеpатуpная Свеpхпpоводимость, в том числе высокотемпеpатуpная |
| spellingShingle |
Свеpхпpоводимость, в том числе высокотемпеpатуpная Свеpхпpоводимость, в том числе высокотемпеpатуpная Zareyan, M. Kolesnichenko, Yu.A. Omelyanchouk, A.N. On the self-consistent theory of Josephson effect in ballistic superconducting microconstrictions Физика низких температур |
| description |
The microscopic theory of current-carrying states in the ballistic superconducting microchannel is presented. The effects of the contact length L on the Josephson current are investigated. For the temperatures T close to the critical temperature Tc the problem is treated self-consistently, with allowance for the distribution of the order parameter D(r) inside the contact. The closed integral equation for D in strongly inhomogeneous microcontact geometry (L< and ~x₀ , where x₀ is the coherence length at T=0) replaces the differential Ginzburg-Landau equation. The critical current Ic(L) is expressed in terms of the solution of this integral equation. The limiting cases of L<<x₀ and L>>x₀ are considered. With increasing length L, the critical current decreases, although the ballistic Sharvin resistance of the contact remains the same as at L=0. For ultrashort channels with L< and ~ aD (aD~nF/wD , where w D is the Debye frequency) the corrections for the value of the critical current Ic(L=0) are sensitive to the strong-coupling effects. |
| format |
Article |
| author |
Zareyan, M. Kolesnichenko, Yu.A. Omelyanchouk, A.N. |
| author_facet |
Zareyan, M. Kolesnichenko, Yu.A. Omelyanchouk, A.N. |
| author_sort |
Zareyan, M. |
| title |
On the self-consistent theory of Josephson effect in ballistic superconducting microconstrictions |
| title_short |
On the self-consistent theory of Josephson effect in ballistic superconducting microconstrictions |
| title_full |
On the self-consistent theory of Josephson effect in ballistic superconducting microconstrictions |
| title_fullStr |
On the self-consistent theory of Josephson effect in ballistic superconducting microconstrictions |
| title_full_unstemmed |
On the self-consistent theory of Josephson effect in ballistic superconducting microconstrictions |
| title_sort |
on the self-consistent theory of josephson effect in ballistic superconducting microconstrictions |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| publishDate |
1999 |
| topic_facet |
Свеpхпpоводимость, в том числе высокотемпеpатуpная |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/139331 |
| citation_txt |
On the self-consistent theory of Josephson effect in ballistic superconducting microconstrictions / M. Zareyan, Yu.A. Kolesnichenko, A.N. Omelyanchouk // Физика низких температур. — 1999. — Т. 25, № 11. — С. 1154-1160. — Бібліогр.: 14 назв. — англ. |
| series |
Физика низких температур |
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2023-10-18T21:20:02Z |
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