ab-plane tunneling and Andreev spectroscopy of superconducting gap and pseudogap in (Bi,Pb)₂Sr₂Ca₂Cu₃O₁₀₊β and Bi₂Sr₂CaCu₂O₈₊δ
We have measured the temperature dependence of gap features revealed by Andreev reflection (Ds) and by tunneling (D) in the ab-plane of optimally and slightly overdoped microcrystals of (BiPb)₂Sr₂Ca₂Cu₃O₁₀₊δ (Bi2223) with critical temperature Tc = 110-115 K, and Bi₂Sr₂CaCu₂O₈₊δ (Bi2212) with Tc = 80...
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| Дата: | 2003 |
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| Автори: | , , , , , , |
| Формат: | Стаття |
| Мова: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2003
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| Назва видання: | Физика низких температур |
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| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/128786 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | ab-plane tunneling and Andreev spectroscopy of superconducting gap and pseudogap in (Bi,Pb)₂Sr₂Ca₂Cu₃O₁₀₊β and Bi₂Sr₂CaCu₂O₈₊δ / A.I. D`yachenko, V.Yu. Tarenkov, R. Szymczak, H. Szymczak, A.V. Abal`oshev, S.J. Lewandowski, L. Leonyuk // Физика низких температур. — 2003. — Т. 29, № 2. — С. 149-155. — Бібліогр.: 27. назв. — англ. |
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irk-123456789-1287862018-01-14T03:03:10Z ab-plane tunneling and Andreev spectroscopy of superconducting gap and pseudogap in (Bi,Pb)₂Sr₂Ca₂Cu₃O₁₀₊β and Bi₂Sr₂CaCu₂O₈₊δ D`yachenko, A.I. Tarenkov, V.Yu. Szymczak, R. Szymczak, H. Abal`oshev, A.V. Lewandowski, S.J. Leonyuk, L. Свеpхпpоводимость, в том числе высокотемпеpатуpная We have measured the temperature dependence of gap features revealed by Andreev reflection (Ds) and by tunneling (D) in the ab-plane of optimally and slightly overdoped microcrystals of (BiPb)₂Sr₂Ca₂Cu₃O₁₀₊δ (Bi2223) with critical temperature Tc = 110-115 K, and Bi₂Sr₂CaCu₂O₈₊δ (Bi2212) with Tc = 80-84 K. The tunneling conductance of a Bi2223-insulator-Bi2223 junction shows peaks at the 2D gap voltage, as well as dips and broad humps at other voltages. In Bi2223, similarly to the well-known Bi2212 spectra, the energies corresponding to 2D, to the dip, and to the hump structure are in the ratio 2:3:4. This confirms that the dip and hump features are generic to the high-temperature superconductors, irrespective of the number of CuO₂ layers or the BiO superstructure. On the other hand, in both compounds the D(T) and Ds(T) dependences are completely different, and we conclude that the two entities are of different natures. 2003 Article ab-plane tunneling and Andreev spectroscopy of superconducting gap and pseudogap in (Bi,Pb)₂Sr₂Ca₂Cu₃O₁₀₊β and Bi₂Sr₂CaCu₂O₈₊δ / A.I. D`yachenko, V.Yu. Tarenkov, R. Szymczak, H. Szymczak, A.V. Abal`oshev, S.J. Lewandowski, L. Leonyuk // Физика низких температур. — 2003. — Т. 29, № 2. — С. 149-155. — Бібліогр.: 27. назв. — англ. 0132-6414 PACS: 74.25.Jb, 74.50.+r, 74.72.-h http://dspace.nbuv.gov.ua/handle/123456789/128786 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 |
Свеpхпpоводимость, в том числе высокотемпеpатуpная Свеpхпpоводимость, в том числе высокотемпеpатуpная |
| spellingShingle |
Свеpхпpоводимость, в том числе высокотемпеpатуpная Свеpхпpоводимость, в том числе высокотемпеpатуpная D`yachenko, A.I. Tarenkov, V.Yu. Szymczak, R. Szymczak, H. Abal`oshev, A.V. Lewandowski, S.J. Leonyuk, L. ab-plane tunneling and Andreev spectroscopy of superconducting gap and pseudogap in (Bi,Pb)₂Sr₂Ca₂Cu₃O₁₀₊β and Bi₂Sr₂CaCu₂O₈₊δ Физика низких температур |
| description |
We have measured the temperature dependence of gap features revealed by Andreev reflection (Ds) and by tunneling (D) in the ab-plane of optimally and slightly overdoped microcrystals of (BiPb)₂Sr₂Ca₂Cu₃O₁₀₊δ (Bi2223) with critical temperature Tc = 110-115 K, and Bi₂Sr₂CaCu₂O₈₊δ (Bi2212) with Tc = 80-84 K. The tunneling conductance of a Bi2223-insulator-Bi2223 junction shows peaks at the 2D gap voltage, as well as dips and broad humps at other voltages. In Bi2223, similarly to the well-known Bi2212 spectra, the energies corresponding to 2D, to the dip, and to the hump structure are in the ratio 2:3:4. This confirms that the dip and hump features are generic to the high-temperature superconductors, irrespective of the number of CuO₂ layers or the BiO superstructure. On the other hand, in both compounds the D(T) and Ds(T) dependences are completely different, and we conclude that the two entities are of different natures. |
| format |
Article |
| author |
D`yachenko, A.I. Tarenkov, V.Yu. Szymczak, R. Szymczak, H. Abal`oshev, A.V. Lewandowski, S.J. Leonyuk, L. |
| author_facet |
D`yachenko, A.I. Tarenkov, V.Yu. Szymczak, R. Szymczak, H. Abal`oshev, A.V. Lewandowski, S.J. Leonyuk, L. |
| author_sort |
D`yachenko, A.I. |
| title |
ab-plane tunneling and Andreev spectroscopy of superconducting gap and pseudogap in (Bi,Pb)₂Sr₂Ca₂Cu₃O₁₀₊β and Bi₂Sr₂CaCu₂O₈₊δ |
| title_short |
ab-plane tunneling and Andreev spectroscopy of superconducting gap and pseudogap in (Bi,Pb)₂Sr₂Ca₂Cu₃O₁₀₊β and Bi₂Sr₂CaCu₂O₈₊δ |
| title_full |
ab-plane tunneling and Andreev spectroscopy of superconducting gap and pseudogap in (Bi,Pb)₂Sr₂Ca₂Cu₃O₁₀₊β and Bi₂Sr₂CaCu₂O₈₊δ |
| title_fullStr |
ab-plane tunneling and Andreev spectroscopy of superconducting gap and pseudogap in (Bi,Pb)₂Sr₂Ca₂Cu₃O₁₀₊β and Bi₂Sr₂CaCu₂O₈₊δ |
| title_full_unstemmed |
ab-plane tunneling and Andreev spectroscopy of superconducting gap and pseudogap in (Bi,Pb)₂Sr₂Ca₂Cu₃O₁₀₊β and Bi₂Sr₂CaCu₂O₈₊δ |
| title_sort |
ab-plane tunneling and andreev spectroscopy of superconducting gap and pseudogap in (bi,pb)₂sr₂ca₂cu₃o₁₀₊β and bi₂sr₂cacu₂o₈₊δ |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| publishDate |
2003 |
| topic_facet |
Свеpхпpоводимость, в том числе высокотемпеpатуpная |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/128786 |
| citation_txt |
ab-plane tunneling and Andreev spectroscopy of superconducting gap and pseudogap in (Bi,Pb)₂Sr₂Ca₂Cu₃O₁₀₊β and Bi₂Sr₂CaCu₂O₈₊δ / A.I. D`yachenko, V.Yu. Tarenkov, R. Szymczak, H. Szymczak, A.V. Abal`oshev, S.J. Lewandowski, L. Leonyuk // Физика низких температур. — 2003. — Т. 29, № 2. — С. 149-155. — Бібліогр.: 27. назв. — англ. |
| series |
Физика низких температур |
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