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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| Veröffentlicht in: | Физика низких температур |
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| Datum: | 1999 |
| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | Englisch |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
1999
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| Online Zugang: | https://nasplib.isofts.kiev.ua/handle/123456789/139331 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | 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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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862537090278883328 |
|---|---|
| author | Zareyan, M. Kolesnichenko, Yu.A. Omelyanchouk, A.N. |
| author_facet | Zareyan, M. Kolesnichenko, Yu.A. Omelyanchouk, A.N. |
| 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. |
| collection | DSpace DC |
| container_title | 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.
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| first_indexed | 2025-11-24T11:38:32Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-139331 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-11-24T11:38:32Z |
| publishDate | 1999 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Zareyan, M. Kolesnichenko, Yu.A. Omelyanchouk, A.N. 2018-06-20T05:19:35Z 2018-06-20T05:19:35Z 1999 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 https://nasplib.isofts.kiev.ua/handle/123456789/139331 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. This work has been supported in part by the Institute for Advanced Studies in Basic Sciences at Zanjan, IRAN. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Свеpхпpоводимость, в том числе высокотемпеpатуpная On the self-consistent theory of Josephson effect in ballistic superconducting microconstrictions Article published earlier |
| spellingShingle | 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 |
| title | 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_short | 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 |
| topic | Свеpхпpоводимость, в том числе высокотемпеpатуpная |
| topic_facet | Свеpхпpоводимость, в том числе высокотемпеpатуpная |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/139331 |
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