Mechanisms for higher $T_C$ in copper oxide superconductors; Ideas from band calculations

Abstract

Band calculations for the hole doped La${}_2$CuO${}_4$ system show that artificial periodicities of Ba dopants can give the material different properties than from a uniform distribution of dopants. A periodicity within the planes make static pseudogaps which could be tuned to raise the density-of-states (DOS) at $E_F$ and the superconducting $T_C$. A periodic doping dependence perpendicular to the CuO planes can increase the matrix element for spin fluctuations.

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References in corpus (4)

• An Intrinsic Bond-Centered Electronic Glass with Unidirectional Domains in Underdoped Cuprates
• Gap anisotropy and universal pairing scale in a spin fluctuation model for cuprates
• Effects of spin-phonon interaction on the properties of in high-T${}_C$ superconductors
• Properties of high-T${}_C$ copper oxides from the nearly-free electron model

Cited by in corpus (12)

• Temperature-dependent electron-phonon coupling in La${}_{2-x}$Sr${}_x$CuO${}_4$ probed by femtosecond X-ray diffraction
• Fermi surface reconstruction of superoxygenated La${}_2$CuO${}_4$ with ordered oxygen interstitials
• Different doping from apical and planar oxygen vacancies in Ba${}_2$CuO${}_{4-\delta }$ and La${}_2$CuO${}_{4-\delta }$
• Electronic structure of superoxygenated La2NiO4 domains with ordered oxygen interstitials
• Multiple electronic components and Lifshitz transitions by oxygen wires formation in layered cuprates and nickelates
• Effects of excess or deficiency of oxygen content on the electronic structure of high-$T_C$ cuprates
• A model of the T-dependent pseudogap and its competition with superconductivity in copp er oxides
• Electronic structure and properties of superconducting materials with simple Fermi surfaces
• Electronic structure of HgBa${}_2$CuO${}_{4+\delta }$ with self-organized interstitial oxygen wires in the Hg spacer planes
• Theoretical aspects of simple and nested Fermi surfaces for superconductivity in doped semiconductors and high-$T_C$ cuprates
• Electronic structure, doping, order and disorder in cuprate superconductors
• Effects of Ba doping on the structural and electronic properties of La${}_{2-x}$Ba${}_x$CuO${}_4$