Interlayer coupling and the c-axis quasiparticle transport in high-$T_c$ cuprates

Abstract

The c-axis quasiparticle conductivity shows different behavior depending on the nature of the interlayer coupling. For coherent coupling with a constant hopping amplitude $t_{\perp }$, the conductivity at zero frequency and zero temperature $\sigma (0,0)$ depends on the direction of the magnetic field, but it does not for angle-dependent hopping $t(\varphi )$ which removes the contribution of the nodal quasiparticles. For incoherent coupling, the conductivity is also independent of field direction and changes only when paramagnetic effects are included. The conductivity sum rule can be used to determine the admixture of coherent to incoherent coupling. The value of $\sigma (0,0)$ can be dominated by $t_{\perp }$ while at the same time $t(\varphi )$ dominates the temperature dependence of the superfluid density.

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References in corpus (5)

• Evidence for coexistence of the superconducting gap and the pseudo - gap in Bi-2212 from intrinsic tunneling spectroscopy
• Impurity-Induced Quasiparticle Transport and Universal Limit Wiedemann-Franz Violation in d-Wave Superconductors
• Interlayer Transport of Quasiparticles and Cooper pairs in Bi2Sr2CaCu2O8+y Superconductors
• The effect of an in-plane magnetic field on the interlayer transport of quasiparticles in layered superconductors
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• Comment: Essence of intrinsic tunneling: Distinguishing intrinsic features from artifacts [Phys.Rev.B 72 (2005) 094503]
• Effects of an in-plane magnetic field on c-axis sum rule and superfluid density in high-$T_c$ cuprates
• Observation of a subharmonic gap singularity in interlayer tunneling characteristics of Bi2Sr2CaCu2O8+d
• C-axis Optical Sum Rule in Josephson Coupled Vortex State
• Nature of c-axis coupling in underdoped Bi2Sr2CaCu2O8 with varying degrees of disorder