Academic Journal
Paraconductivity in layered cuprates behaves as if due to pairing of nearly free quasiparticles
| العنوان: | Paraconductivity in layered cuprates behaves as if due to pairing of nearly free quasiparticles |
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| المؤلفون: | Caprara, S, Grilli, M, Leridon, B, Vanacken, Johan |
| بيانات النشر: | Amer physical soc |
| سنة النشر: | 2009 |
| المجموعة: | KU Leuven: Lirias |
| مصطلحات موضوعية: | bcs theory, fluctuations in superconductors, high-temperature superconductors, lanthanum compounds, magnetic fields, quasiparticles, strontium compounds, superconducting transition temperature, normal-state, thin-films, t-c, pseudogap state, superconductors, bi2sr2cacu2o8+delta, conductivity, fluctuations, metal, la2-xsrxcuo4 |
| الوصف: | We revisit the Aslamazov-Larkin theory of paraconductivity in two dimensions to identify its universal and its specific model-dependent features. We show that both the numerical prefactor and the temperature dependence of the experimental paraconductivity in underdoped La2-xSrxCuO4 provide evidence that the paired carriers behave as if they were nearly free fermionic quasiparticles. This conclusion is strengthened by the analysis of paraconductivity data in the presence of a finite magnetic field. In this case we show that there exists a temperature range above T-c where the superconducting fluctuations are purely Gaussian and their destruction is determined by a rather low magnetic field scale H-c2(G)(T=0). ; status: published |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 2469-9950 1098-0121 |
| Relation: | Physical review b vol:79 issue:2 pages:1-6; https://lirias.kuleuven.be/handle/123456789/242835 |
| الاتاحة: | https://lirias.kuleuven.be/handle/123456789/242835 |
| رقم الانضمام: | edsbas.8C7AFCA2 |
| قاعدة البيانات: | BASE |
| تدمد: | 24699950 10980121 |
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