Size-effect of Kondo scattering by Fe impurities in Cu point contacts
The low temperature dVldl(V) characteristics are investigated for point contacts of various sizes (d ≈ 2-35 nm) using a mechanically controlled breakjunction of a Kondo alloy CuFe (0.1 at. %). A size effect, being manifested in an increase in the effective Kondo temperature with decreasing contact s...
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| Дата: | 1996 |
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| Автори: | , , , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
1996
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| Назва видання: | Физика низких температур |
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| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/176449 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Size-effect of Kondo scattering by Fe impurities in Cu point contacts / N. Van der Post, F. Mettes, J.A. Mydoch, J.M. van Ruitenbeek, I.K. Yanson // Физика низких температур. — 1996. — Т. 22, № 3. — С. 313-321. — Бібліогр.: 22 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
irk-123456789-176449 |
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irk-123456789-1764492021-02-05T01:28:41Z Size-effect of Kondo scattering by Fe impurities in Cu point contacts Van der Post, N. Mettes, F. Mydoch, J.A. Ruitenbeek, J.M.van Yanson, I.K. Электpонные свойства металлов и сплавов The low temperature dVldl(V) characteristics are investigated for point contacts of various sizes (d ≈ 2-35 nm) using a mechanically controlled breakjunction of a Kondo alloy CuFe (0.1 at. %). A size effect, being manifested in an increase in the effective Kondo temperature with decreasing contact size, is found both on voltage and magnetic field dV/dl dependences. In accordance with the prediction of the Zarand-Udvardi theory the enhancement of the Kondo temperature in the CuFe alloy appears to be quantitatively much smaller than in CuMn alloy of the same concentration. This enhancement is due to the strong fluctuations of the local electron density of states in the ultrasmall metallic contacts. The Kondo temperature of a magnetic impurity provides a local probe of these fluctuations. 1996 Article Size-effect of Kondo scattering by Fe impurities in Cu point contacts / N. Van der Post, F. Mettes, J.A. Mydoch, J.M. van Ruitenbeek, I.K. Yanson // Физика низких температур. — 1996. — Т. 22, № 3. — С. 313-321. — Бібліогр.: 22 назв. — англ. 0132-6414 http://dspace.nbuv.gov.ua/handle/123456789/176449 537.6 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 |
Электpонные свойства металлов и сплавов Электpонные свойства металлов и сплавов |
| spellingShingle |
Электpонные свойства металлов и сплавов Электpонные свойства металлов и сплавов Van der Post, N. Mettes, F. Mydoch, J.A. Ruitenbeek, J.M.van Yanson, I.K. Size-effect of Kondo scattering by Fe impurities in Cu point contacts Физика низких температур |
| description |
The low temperature dVldl(V) characteristics are investigated for point contacts of various sizes (d ≈ 2-35 nm) using a mechanically controlled breakjunction of a Kondo alloy CuFe (0.1 at. %). A size effect, being manifested in an increase in the effective Kondo temperature with decreasing contact size, is found both on voltage and magnetic field dV/dl dependences. In accordance with the prediction of the Zarand-Udvardi theory the enhancement of the Kondo temperature in the CuFe alloy appears to be quantitatively much smaller than in CuMn alloy of the same concentration. This enhancement is due to the strong fluctuations of the local electron density of states in the ultrasmall metallic contacts. The Kondo temperature of a magnetic impurity provides a local probe of these fluctuations. |
| format |
Article |
| author |
Van der Post, N. Mettes, F. Mydoch, J.A. Ruitenbeek, J.M.van Yanson, I.K. |
| author_facet |
Van der Post, N. Mettes, F. Mydoch, J.A. Ruitenbeek, J.M.van Yanson, I.K. |
| author_sort |
Van der Post, N. |
| title |
Size-effect of Kondo scattering by Fe impurities in Cu point contacts |
| title_short |
Size-effect of Kondo scattering by Fe impurities in Cu point contacts |
| title_full |
Size-effect of Kondo scattering by Fe impurities in Cu point contacts |
| title_fullStr |
Size-effect of Kondo scattering by Fe impurities in Cu point contacts |
| title_full_unstemmed |
Size-effect of Kondo scattering by Fe impurities in Cu point contacts |
| title_sort |
size-effect of kondo scattering by fe impurities in cu point contacts |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| publishDate |
1996 |
| topic_facet |
Электpонные свойства металлов и сплавов |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/176449 |
| citation_txt |
Size-effect of Kondo scattering by Fe impurities in Cu point contacts / N. Van der Post, F. Mettes, J.A. Mydoch, J.M. van Ruitenbeek, I.K. Yanson // Физика низких температур. — 1996. — Т. 22, № 3. — С. 313-321. — Бібліогр.: 22 назв. — англ. |
| series |
Физика низких температур |
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AT vanderpostn sizeeffectofkondoscatteringbyfeimpuritiesincupointcontacts AT mettesf sizeeffectofkondoscatteringbyfeimpuritiesincupointcontacts AT mydochja sizeeffectofkondoscatteringbyfeimpuritiesincupointcontacts AT ruitenbeekjmvan sizeeffectofkondoscatteringbyfeimpuritiesincupointcontacts AT yansonik sizeeffectofkondoscatteringbyfeimpuritiesincupointcontacts |
| first_indexed |
2025-07-15T14:12:55Z |
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2025-07-15T14:12:55Z |
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