An alternative view at the zero-bias anomaly of metallic point contacts
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
An alternative view at the zero-bias anomaly of metallic point contacts
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| Creator |
Gloos, Kurt
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| Subject |
Электронные свойства проводящих систем
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| Description |
We have studied the zero-bias anomaly of point contacts as function of contact size for a wide range of materials from simple normal metals, superconductors, and magnets to highly correlated heavy-fermion compounds. The size dR of the zero-bias anomaly varied in a universal manner proportional to the square of the contact resistance R between 1 W and 10 kW, that is for contact radii from about 15 nm down to 0.2 nm. Magnetic impurities, two-level systems, or a tunneling barrier are unlikely to be the main source of this anomaly. We suggest instead Kondo-type scattering of the conduction electrons due to a spontaneous electron spin polarization at the point contact.
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| Date |
2017-05-26T19:14:01Z
2017-05-26T19:14:01Z 2009 |
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| Type |
Article
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| Identifier |
An alternative view at the zero-bias anomaly of metallic point contacts / Kurt Gloos // Физика низких температур. — 2009. — Т. 35, № 12. — С. 1204-1208. — Бібліогр.: 27 назв. — англ.
0132-6414 PACS: 73.20.–r, 73.23.–b, 73.63.–b, 73.40.Jn http://dspace.nbuv.gov.ua/handle/123456789/117829 |
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| Language |
en
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| Relation |
Физика низких температур
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| Publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
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