Interlayer pair tunneling and gap anisotropy in YBa${}_2$Cu${}_3$O${}_{7-\delta }$

Abstract

Recent ARPES measurement observed a large $ab$-axis gap anisotropy, $\Delta (0,\pi )/\Delta (\pi ,0)=1.5$, in clean YBa${}_2$Cu${}_3$O${}_{7-\delta }$. This indicates that some sub-dominant component may exist in the $d_{x^2-y^2}$-wave dominant gap. We propose that the interlayer pairing tunneling contribution can be determined through the investigation of the order parameter anisotropy. Their potentially observable features in transport and spin dynamics are also studied.

4 pages, 3 figures

References in corpus (4)

• Bilayer Splitting in the Electronic Structure of Heavily Overdoped Bi2Sr2CaCu2O8+d
• Superconducting Gap and Strong In-Plane Anisotropy in Untwinned YBa2Cu3O7-d
• Ultrasound Attenuation in Sr${}_2$RuO${}_4$: an Angle-Resolved Study of the Superconducting Gap Function
• Observation of the Transverse Optical Plasmon in SmLa0.8Sr0.2CuO4-d

Cited by in corpus (1)

• Angle-resolved photoemission spectroscopy of the cuprate superconductors