s-wave symmetry along the c-axis and s+d in-plane superconductivity in bulk YBa_2Cu_4O_8

Simple item page
dc.creatorKhasanov, R.
dc.creatorShengelaya, A.
dc.creatorBussmann-Holder, A.
dc.creatorKarpinski, J.
dc.creatorKeller, H.
dc.creatorMüller, K. A.
dc.date2007-05-04
dc.date.accessioned2026-07-07T10:07:54Z
dc.date.available2026-07-07T10:07:54Z
dc.descriptionTo clarify the order parameter symmetry of cuprates, the magnetic penetration depth $λ$ was measured along the crystallographic directions $a$, $b$, and $c$ in single crystals of YBa$_2$Cu$_4$O$_8$ via muon spin rotation. This method is direct, bulk sensitive, and unambiguous. The temperature dependences of $λ_a^{-2}$ and $λ_b^{-2}$ exhibit an inflection point at low temperatures as is typical for two-gap superconductivity (TGS) with $s+d-$wave character in the planes. Perpendicular to the planes a pure s-wave gap is observed thereby highlighting the important role of c-axis effects. We conclude that these are generic and universal features in the bulk of cuprates.
dc.description5 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/0705.0577
dc.identifierhttp://arxiv.org/abs/0705.0577
dc.identifierJournal of Superconductivity and Novel Magnetism 21, 1557 (2008)
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/170810
dc.subjectSuperconductivity
dc.titles-wave symmetry along the c-axis and s+d in-plane superconductivity in bulk YBa_2Cu_4O_8
dc.typetext

Files

Collections

arXiv