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...
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Дата: | 1999 |
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Автори: | , , |
Формат: | Стаття |
Мова: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
1999
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Назва видання: | Физика низких температур |
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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. |
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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 |
work_keys_str_mv |
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first_indexed |
2025-07-10T07:59:15Z |
last_indexed |
2025-07-10T07:59:15Z |
_version_ |
1837246038890512384 |
fulltext |
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