An alternative view at the zero-bias anomaly of metallic point contacts
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 th...
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| Veröffentlicht in: | Физика низких температур |
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| Datum: | 2009 |
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| Format: | Artikel |
| Sprache: | Englisch |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2009
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| Online Zugang: | https://nasplib.isofts.kiev.ua/handle/123456789/117829 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | 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. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862688704923959296 |
|---|---|
| author | Gloos, Kurt |
| author_facet | Gloos, Kurt |
| citation_txt | 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. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| 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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| first_indexed | 2025-12-07T16:09:31Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-117829 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-12-07T16:09:31Z |
| publishDate | 2009 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Gloos, Kurt 2017-05-26T19:14:01Z 2017-05-26T19:14:01Z 2009 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 https://nasplib.isofts.kiev.ua/handle/123456789/117829 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. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Электронные свойства проводящих систем An alternative view at the zero-bias anomaly of metallic point contacts Article published earlier |
| spellingShingle | An alternative view at the zero-bias anomaly of metallic point contacts Gloos, Kurt Электронные свойства проводящих систем |
| title | An alternative view at the zero-bias anomaly of metallic point contacts |
| title_full | An alternative view at the zero-bias anomaly of metallic point contacts |
| title_fullStr | An alternative view at the zero-bias anomaly of metallic point contacts |
| title_full_unstemmed | An alternative view at the zero-bias anomaly of metallic point contacts |
| title_short | An alternative view at the zero-bias anomaly of metallic point contacts |
| title_sort | alternative view at the zero-bias anomaly of metallic point contacts |
| topic | Электронные свойства проводящих систем |
| topic_facet | Электронные свойства проводящих систем |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/117829 |
| work_keys_str_mv | AT glooskurt analternativeviewatthezerobiasanomalyofmetallicpointcontacts AT glooskurt alternativeviewatthezerobiasanomalyofmetallicpointcontacts |