Tuning the interlayer spacing in high T_c superconductors: penetration depth and two-dimensional superfluid density

Abstract

Substantial control of the interlayer spacing in Bi-based high temperature superconductors has been achieved through the intercalation of guest molecules between the superconducting layers. Measurements using implanted muons reveal that the penetration depth increases with increasing layer separation while T_c does not vary appreciably, demonstrating that the bulk superfluid density is not the determining factor controlling T_c. Our results strongly suggest that the superfluid density appearing in the Uemura scaling relation n_s/m* \propto T_c should be interpreted as the two dimensional density within the superconducting layers, which we find to be constant for each class of system investigated.

4 pages, 3 figures

References in corpus (5)

• Properties of the Ideal Ginzburg-Landau Vortex Lattice
• Bose-Einstein to BCS Crossover Picture for High-T_c Cuprates
• Quantum critical behaviour in the superfluid density of strongly underdoped ultrathin cuprate films
• Low-Field Phase Diagram of Layered Superconductors: The Role of Electromagnetic Coupling
• Criticality in correlated quantum matter

Cited by in corpus (11)

• Two-gap superconductivity with line nodes in CsCa${}_2$Fe${}_4$As${}_4$F${}_2$
• Evidence of Two-Dimensional Quantum Critical Behavior in the Superfluid Density of Deeply Underdoped Bi2Sr2CaCu2O8+x
• Superconductivity drives magnetism in delta-doped La2CuO4
• Magnetic phase separation and superfluid density measurements in alkali metal-organic solvent intercalated iron selenide superconductor Lix(C5H5N)yFe2-zSe2
• Comment on "Superconductivity in electron-doped layered TiNCl with variable interlayer coupling"
• Superconducting interaction charge in thallium-based high-Tc cuprates: Roles of cation oxidation state and electronegativity
• Nodeless superconductivity in quasi-one-dimensional Nb2PdS5: A muSR study
• Modeling Intercalated Group-4-Metal Nitride Halide Superconductivity with Interlayer Coulomb Coupling
• Superconductivity in La(1.56)Sr(0.44)CuO(4)/La(2)CuO(4) superlattices
• Superfluid density in Bi2Sr2CaCu2O8+x from optimal doping to severe underdoping and its implications
• Transition in High and Low Temperature Superconductors as Bounded Bose Einstein Condensation