Plane - Chain coupling in YBa_{2}Cu_{3}O_{7} : temperature dependence of the penetration depth
| Autor: | X. Leyronas, R. Combescot |
|---|---|
| Přispěvatelé: | Laboratoire de Physique Statistique de l'ENS (LPS), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris Diderot - Paris 7 (UPD7)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Gasiorek, Nelly |
| Rok vydání: | 1996 |
| Předmět: |
Superconductivity
Physics Condensed matter physics Plane (geometry) Condensed Matter - Superconductivity Energy Engineering and Power Technology Order (ring theory) FOS: Physical sciences Fermi surface [PHYS.COND.CM-S] Physics [physics]/Condensed Matter [cond-mat]/Superconductivity [cond-mat.supr-con] Condensed Matter Physics Coupling (probability) 01 natural sciences 3. Good health 010305 fluids & plasmas Electronic Optical and Magnetic Materials [PHYS.COND.CM-S]Physics [physics]/Condensed Matter [cond-mat]/Superconductivity [cond-mat.supr-con] Superconductivity (cond-mat.supr-con) Pairing Condensed Matter::Superconductivity 0103 physical sciences Electrical and Electronic Engineering 010306 general physics Anisotropy Penetration depth |
| Zdroj: | Physica C: Superconductivity and its Applications Physica C: Superconductivity and its Applications, 1997, 290, pp.215 Physica C: Superconductivity and its Applications, Elsevier, 1997, 290, pp.215 |
| ISSN: | 0921-4534 |
| DOI: | 10.48550/arxiv.cond-mat/9612145 |
| Popis: | We have studied the penetration depth for a model of $YBa_{2}Cu_{3}O_{7}$ involving pairing both in the $CuO_{2}$ planes and in the CuO chains. In this model pairing in the planes is due to an attractive interaction, while Coulomb repulsion induces in the chains an order parameter with opposite sign. Due to the anticrossing produced by hybridization between planes and chains, one obtains a d-wave like order parameter which changes sign on a single sheet of the Fermi surface and has nodes in the gap. We find that our model accounts quite well for the anisotropy of the penetration depth and for the absolute values. We reproduce fairly well the whole temperature dependence for both the a and the b directions, including the linear dependence at low temperature. We use a set of parameters which are all quite reasonable physically. Our results for the c direction are also satisfactory, although the situation is less clear both experimentally and theoretically. Comment: 11 pages, revtex, 6 figures |
| Databáze: | OpenAIRE |
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