Spatial distribution of superconducting and charge-density-wave order parameters in cuprates and its influence on the quasiparticle tunnel current (Review Article)
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
Spatial distribution of superconducting and charge-density-wave order parameters in cuprates and its influence on the quasiparticle tunnel current (Review Article)
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| Creator |
Gabovich, A. M.
Voitenko, A.I. |
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| Subject |
К 30-летию открытия высокотемпературной сверхпроводимости
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| Description |
The state of the art concerning tunnel measurements of energy gaps in cuprate oxides has been analyzed. A detailed review of the relevant literature is made, and original results calculated for the quasiparticle tunnel current J(V) between a metallic tip and a disordered d-wave superconductor partially gapped by charge density waves (CDWs) are reported, because it is this model of high-temperature superconductors that becomes popular owing to recent experiments in which CDWs were observed directly. The current was calculated suggesting the scatter of both the superconducting and CDW order parameters due to the samples' intrinsic inhomogeneity. It was shown that peculiarities in the current-voltage characteristics inherent to the case of homogeneous superconducting material are severely smeared, and the CDW-related features transform into experimentally observed peak-dip-hump structures. Theoretical results were used to fit data measured for YBa₂Cu₃O₇–δ and Bi₂Sr₂CaCu₂O₈₊δ. The fitting demonstrated a good qualitative agreement between the experiment and model calculations. The analysis of the energy gaps in high- Tc superconductors is important both per se and as a tool to uncover the nature of superconductivity in cuprates not elucidated so far despite of much theoretical effort and experimental progress.
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| Date |
2018-01-18T17:58:59Z
2018-01-18T17:58:59Z 2016 |
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| Type |
Article
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| Identifier |
Spatial distribution of superconducting and charge-density-wave order parameters in cuprates and its influence on the quasiparticle tunnel current (Review Article) / Alexander M. Gabovich Alexander I. Voitenko // Физика низких температур. — 2016. — Т. 42, № 10. — С. 1103-1114. — Бібліогр.: 164 назв. — англ.
0132-6414 PACS: 71.45.Lr, 74.55.+v, 74.81.–g http://dspace.nbuv.gov.ua/handle/123456789/129307 |
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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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