Doping asymmetry in the three-band Hamiltonian for cuprate ladders: failure of the standard model of superconductivity in cuprates

Abstract

The relevance of the single-band two-dimensional Hubbard model to superconductivity in the doped cuprates has recently been questioned, based on Density matrix Renormalization Group (DMRG) computations on extended t-J models that found superconductivity over unrealistically broad doping region upon electron-doping, yet complete absence of superconductivity for hole-doping. We report very similar results from DMRG calculations on Cu${}_2$O${}_3$ two-leg ladder within the parent three-band correlated-electron Hamiltonian. The strong asymmetry found in our calculations are in contradiction to the deep and profound symmetry between electron- and hole-doped cuprate superconductors, apart from their critical temperatures, that has been found from recent experiments.

6 pages, 4 figures

References in corpus (9)

• Spin correlations in the electron-doped high-transition-temperature superconductor Nd{2-x}Ce{x}CuO{4+/-delta}
• Ground State Phase Diagram of the $t$-$t^{\prime }$-$J$ model
• Competition between d-wave superconductivity and antiferromagnetism in the 2D Hubbard model
• Real-Space Parallel Density Matrix Renormalization Group
• Effective Hamiltonian for cuprate superconductors derived from multi-scale ab initio scheme with level renormalization
• Hubbard ladders at small $U$ revisited
• Pairing Properties of the $t$-$t^{\prime }$-$t^{\prime \prime }$-$J$ model
• Strongly correlated superconductivity with long-range spatial fluctuations
• Pair binding and enhancement of pairing correlations in asymmetric Hubbard ladders

Cited by in corpus (3)

• Density-matrix-renormalization-group-based downfolding of the three-band Hubbard model: the importance of density-assisted hopping
• Valence Transition Theory of the Pressure-Induced Dimensionality Crossover in Superconducting Sr${}_{14-x}$Ca${}_x$Cu${}_{24}$O${}_{41}$
• Influence of oxygen orbitals and boundary conditions on the pairing behavior in the Emery model for doped ladders