Penetration depth anisotropy in d-density wave scenario
Departamento de Física, UFAM, 3000-Japiim, 69077-000 Manaus, AM, Brazil
Corresponding author: a firstname.lastname@example.org
Revised: 6 March 2008
Published online: 19 April 2008
We present the in-plane and c-axis penetration depths of the underdoped cuprates. The pseudogap phase is addressed within the framework of the ordered d-density wave (DDW). The above scenario is considered using a mean-field calculation of the tight binding model which incorporates two types of layers stacked in an alternating fashion. The normal layers become superconducting due to the proximity to the planes below the critical temperature. We observe distinct behaviors for the penetration depth results along the two directions for a range of interlayer coupling strengths. We discuss the effects of the interlayer coupling strength and doping. Moreover, we compare our results with the experimental observations.
PACS: 71.10.Fd – Lattice fermion models / 74.72.Bk – Y-based cuprates / 71.27.+a – Strongly correlated electron systems; heavy fermions / 74.45.+c – Proximity effects; Andreev effect; SN and SNS junctions
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2008