Point-contact Andreev-reflection spectroscopy in anisotropic superconductors: the importance of directionality (Review Article)
Point-contact Andreev-reflection spectroscopy (PCARS) has demonstrated to be one of the most effective experimental tools for the investigation of fundamental properties of superconductors such as the superconducting gap and the electron–phonon (or, more generally, electron–boson) coupling. By rev...
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| Опубліковано в: : | Физика низких температур |
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| Дата: | 2013 |
| Автори: | , , , , |
| Формат: | Стаття |
| Мова: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2013
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| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/118220 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Point-contact Andreev-reflection spectroscopy in anisotropic superconductors: the importance of directionality (Review Article) / D. Daghero, M. Tortello, P. Pecchio, V.A. Stepanov, R.S. Gonnelli // Физика низких температур. — 2013. — Т. 39, № 3. — С. 261–275. — Бібліогр.: 52 назв. — англ. |
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Daghero, D. Tortello, M. Pecchio, P. Stepanov, V.A. Gonnelli, R.S. 2017-05-29T13:03:52Z 2017-05-29T13:03:52Z 2013 Point-contact Andreev-reflection spectroscopy in anisotropic superconductors: the importance of directionality (Review Article) / D. Daghero, M. Tortello, P. Pecchio, V.A. Stepanov, R.S. Gonnelli // Физика низких температур. — 2013. — Т. 39, № 3. — С. 261–275. — Бібліогр.: 52 назв. — англ. 0132-6414 PACS: 74.45.+c, 74.70.–b, 74.20.Rp https://nasplib.isofts.kiev.ua/handle/123456789/118220 Point-contact Andreev-reflection spectroscopy (PCARS) has demonstrated to be one of the most effective experimental tools for the investigation of fundamental properties of superconductors such as the superconducting gap and the electron–phonon (or, more generally, electron–boson) coupling. By reviewing relevant examples reported in literature and presenting new results, in this paper we show that when the direction of the interface with respect to the crystallographic axes can be controlled (as in single crystals and epitaxial films) PCARS can provide invaluable information about the anisotropy of the pairing wavefunction or — in the case of multiband superconductors — on the number, amplitude and symmetry of the energy gaps. Moreover, the analysis of PCARS results within a suitable 3D generalization of the BTK model allows obtaining qualitative information about the topology of the Fermi surface. We acknowledge the financial support of the European Community through to the Collaborative EU-Japan Project “IRON SEA” (NMP3-SL-2011-283141), and of the Italian Ministry of Research through the PRIN Project N. 2008XWLWF9-005. Our warmest thanks to all the people who contributed to the research summarized in this paper: G.A. Ummarino, S. Galasso, G. Profeta for help in theoretical analysis and bandstructure calculations; J. Karpinski, N.D. Zhigadlo, Z. Bukowski, J. Jiang, J.S. Kim, K. Iida and F. Kurth for providing us with crystals and films used for PCARS measurements. RSG acknowledges R.K. Kremer and the Max Planck Institute for Solid State Research in Stuttgart, where the measurements on Ca(Fe,Co)2As2 were carried out. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур К 75-летию со дня рождения И. К. Янсона Point-contact Andreev-reflection spectroscopy in anisotropic superconductors: the importance of directionality (Review Article) Article published earlier |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Point-contact Andreev-reflection spectroscopy in anisotropic superconductors: the importance of directionality (Review Article) |
| spellingShingle |
Point-contact Andreev-reflection spectroscopy in anisotropic superconductors: the importance of directionality (Review Article) Daghero, D. Tortello, M. Pecchio, P. Stepanov, V.A. Gonnelli, R.S. К 75-летию со дня рождения И. К. Янсона |
| title_short |
Point-contact Andreev-reflection spectroscopy in anisotropic superconductors: the importance of directionality (Review Article) |
| title_full |
Point-contact Andreev-reflection spectroscopy in anisotropic superconductors: the importance of directionality (Review Article) |
| title_fullStr |
Point-contact Andreev-reflection spectroscopy in anisotropic superconductors: the importance of directionality (Review Article) |
| title_full_unstemmed |
Point-contact Andreev-reflection spectroscopy in anisotropic superconductors: the importance of directionality (Review Article) |
| title_sort |
point-contact andreev-reflection spectroscopy in anisotropic superconductors: the importance of directionality (review article) |
| author |
Daghero, D. Tortello, M. Pecchio, P. Stepanov, V.A. Gonnelli, R.S. |
| author_facet |
Daghero, D. Tortello, M. Pecchio, P. Stepanov, V.A. Gonnelli, R.S. |
| topic |
К 75-летию со дня рождения И. К. Янсона |
| topic_facet |
К 75-летию со дня рождения И. К. Янсона |
| publishDate |
2013 |
| language |
English |
| container_title |
Физика низких температур |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| format |
Article |
| description |
Point-contact Andreev-reflection spectroscopy (PCARS) has demonstrated to be one of the most effective experimental
tools for the investigation of fundamental properties of superconductors such as the superconducting
gap and the electron–phonon (or, more generally, electron–boson) coupling. By reviewing relevant examples reported
in literature and presenting new results, in this paper we show that when the direction of the interface with
respect to the crystallographic axes can be controlled (as in single crystals and epitaxial films) PCARS can provide
invaluable information about the anisotropy of the pairing wavefunction or — in the case of multiband superconductors
— on the number, amplitude and symmetry of the energy gaps. Moreover, the analysis of PCARS
results within a suitable 3D generalization of the BTK model allows obtaining qualitative information about the
topology of the Fermi surface.
|
| issn |
0132-6414 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/118220 |
| citation_txt |
Point-contact Andreev-reflection spectroscopy in anisotropic superconductors: the importance of directionality (Review Article) / D. Daghero, M. Tortello, P. Pecchio, V.A. Stepanov, R.S. Gonnelli // Физика низких температур. — 2013. — Т. 39, № 3. — С. 261–275. — Бібліогр.: 52 назв. — англ. |
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2025-12-07T20:18:49Z |
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