Observation of anisotropic effect of antiferromagnetic ordering on the superconducting gap in ErNi₂B₂C
The point-contact spectra of the Andreev reflection dV / dI curves of the superconducting rare-earth nickel borocarbide ErNi₂B₂C (Tc≈11K) have been analyzed in the «one-gap» and «two-gap» approximations using the generalized Blonder–Tinkham–Klapwijk model and the Beloborod'ko model allowing for...
Saved in:
| Published in: | Физика низких температур |
|---|---|
| Date: | 2010 |
| Main Authors: | , , , , , , |
| Format: | Article |
| Language: | English |
| Published: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2010
|
| Subjects: | |
| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/117525 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Observation of anisotropic effect of antiferromagnetic ordering on the superconducting gap in ErNi₂B₂C / N.L. Bobrov, V.N. Chernobay, Yu.G. Naidyuk, L.V. Tyutrina, I.K. Yanson, D.G. Naugle, K.D.D. Rathnayaka // Физика низких температур. — 2010. — Т. 36, № 10-11. — С. 1228–1243. — Бібліогр.: 42 назв. — англ. |
Institution
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862746684326412288 |
|---|---|
| author | Bobrov, N.L. Chernobay, V.N. Naidyuk, Yu.G. Tyutrina, L.V. Yanson, I.K. Naugle, D.G. Rathnayaka, K.D.D. |
| author_facet | Bobrov, N.L. Chernobay, V.N. Naidyuk, Yu.G. Tyutrina, L.V. Yanson, I.K. Naugle, D.G. Rathnayaka, K.D.D. |
| citation_txt | Observation of anisotropic effect of antiferromagnetic ordering on the superconducting gap in ErNi₂B₂C / N.L. Bobrov, V.N. Chernobay, Yu.G. Naidyuk, L.V. Tyutrina, I.K. Yanson, D.G. Naugle, K.D.D. Rathnayaka // Физика низких температур. — 2010. — Т. 36, № 10-11. — С. 1228–1243. — Бібліогр.: 42 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | The point-contact spectra of the Andreev reflection dV / dI curves of the superconducting rare-earth nickel borocarbide ErNi₂B₂C (Tc≈11K) have been analyzed in the «one-gap» and «two-gap» approximations using the generalized Blonder–Tinkham–Klapwijk model and the Beloborod'ko model allowing for the pair-breaking effect of magnetic impurities. Experimental and calculated curves have been compared not only in shape, but in magnitude as well, which provide more reliable data for determining the temperature dependence of the energy gap (or superconducting order parameter) Δ(T). The anisotropic effect of antiferromagnetic ordering at TN≈6K on the superconducting gap/order parameter has been determined: as the temperature is lowered, Δ decreases by∼25% in the c-direction and only by∼4% in the ab-plane. It is found that the pair-breaking parameter increases in the vicinity of the magnetic transitions, the increase being more pronounced in the c-direction. The efficiency of the models was tested for providing Δ(T) data for ErNi₂B₂C from Andreev reflection spectra.
|
| first_indexed | 2025-12-07T20:47:03Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-117525 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-12-07T20:47:03Z |
| publishDate | 2010 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Bobrov, N.L. Chernobay, V.N. Naidyuk, Yu.G. Tyutrina, L.V. Yanson, I.K. Naugle, D.G. Rathnayaka, K.D.D. 2017-05-24T05:27:02Z 2017-05-24T05:27:02Z 2010 Observation of anisotropic effect of antiferromagnetic ordering on the superconducting gap in ErNi₂B₂C / N.L. Bobrov, V.N. Chernobay, Yu.G. Naidyuk, L.V. Tyutrina, I.K. Yanson, D.G. Naugle, K.D.D. Rathnayaka // Физика низких температур. — 2010. — Т. 36, № 10-11. — С. 1228–1243. — Бібліогр.: 42 назв. — англ. 0132-6414 PACS: 74.45.+c, 74.70.Dd https://nasplib.isofts.kiev.ua/handle/123456789/117525 The point-contact spectra of the Andreev reflection dV / dI curves of the superconducting rare-earth nickel borocarbide ErNi₂B₂C (Tc≈11K) have been analyzed in the «one-gap» and «two-gap» approximations using the generalized Blonder–Tinkham–Klapwijk model and the Beloborod'ko model allowing for the pair-breaking effect of magnetic impurities. Experimental and calculated curves have been compared not only in shape, but in magnitude as well, which provide more reliable data for determining the temperature dependence of the energy gap (or superconducting order parameter) Δ(T). The anisotropic effect of antiferromagnetic ordering at TN≈6K on the superconducting gap/order parameter has been determined: as the temperature is lowered, Δ decreases by∼25% in the c-direction and only by∼4% in the ab-plane. It is found that the pair-breaking parameter increases in the vicinity of the magnetic transitions, the increase being more pronounced in the c-direction. The efficiency of the models was tested for providing Δ(T) data for ErNi₂B₂C from Andreev reflection spectra. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Quantum coherent effects in superconductors and normal metals Observation of anisotropic effect of antiferromagnetic ordering on the superconducting gap in ErNi₂B₂C Article published earlier |
| spellingShingle | Observation of anisotropic effect of antiferromagnetic ordering on the superconducting gap in ErNi₂B₂C Bobrov, N.L. Chernobay, V.N. Naidyuk, Yu.G. Tyutrina, L.V. Yanson, I.K. Naugle, D.G. Rathnayaka, K.D.D. Quantum coherent effects in superconductors and normal metals |
| title | Observation of anisotropic effect of antiferromagnetic ordering on the superconducting gap in ErNi₂B₂C |
| title_full | Observation of anisotropic effect of antiferromagnetic ordering on the superconducting gap in ErNi₂B₂C |
| title_fullStr | Observation of anisotropic effect of antiferromagnetic ordering on the superconducting gap in ErNi₂B₂C |
| title_full_unstemmed | Observation of anisotropic effect of antiferromagnetic ordering on the superconducting gap in ErNi₂B₂C |
| title_short | Observation of anisotropic effect of antiferromagnetic ordering on the superconducting gap in ErNi₂B₂C |
| title_sort | observation of anisotropic effect of antiferromagnetic ordering on the superconducting gap in erni₂b₂c |
| topic | Quantum coherent effects in superconductors and normal metals |
| topic_facet | Quantum coherent effects in superconductors and normal metals |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/117525 |
| work_keys_str_mv | AT bobrovnl observationofanisotropiceffectofantiferromagneticorderingonthesuperconductinggapinerni2b2c AT chernobayvn observationofanisotropiceffectofantiferromagneticorderingonthesuperconductinggapinerni2b2c AT naidyukyug observationofanisotropiceffectofantiferromagneticorderingonthesuperconductinggapinerni2b2c AT tyutrinalv observationofanisotropiceffectofantiferromagneticorderingonthesuperconductinggapinerni2b2c AT yansonik observationofanisotropiceffectofantiferromagneticorderingonthesuperconductinggapinerni2b2c AT naugledg observationofanisotropiceffectofantiferromagneticorderingonthesuperconductinggapinerni2b2c AT rathnayakakdd observationofanisotropiceffectofantiferromagneticorderingonthesuperconductinggapinerni2b2c |