Filling-dependence of the zigzag Hubbard ladder for a quasi-one-dimensional superconductor Pr_2Ba_4Cu_7O_{15-delta}

Abstract

We investigate filling dependence of the zigzag Hubbard ladder, using density matrix renormalization group method. We illustrate the chemical-potential vs. electron-density and spin gap vs. electron density curves, which reflect characteristic properties of the electron state.On the basis of the obtained phase diagram, we discuss the connection to a novel quasi-one-dimensional superconductor Pr${}_2$Ba${}_4$Cu${}_7$O${}_{15-\delta }$.

5 pages, 6 figures, fig.4 is added

References in corpus (2)

• Magnetic phase diagram of the S=1/2 antiferromagnetic zigzag spin chain in the strongly frustrated region: cusp and plateau
• Fractional S^z excitation and its bound state around the 1/3 plateau of the S=1/2 Ising-like zigzag XXZ chain

Cited by in corpus (6)

• Superconductivity due to spin fluctuations originating from multiple Fermi surfaces in a double chain superconductor Pr${}_2$Ba${}_4$Cu${}_7$O${}_{15-\delta }$}
• Phase diagram of the one-dimensional Hubbard model with next-nearest-neighbor hopping
• Superconductivity in zigzag CuO chains
• Crystal structures and superconducting properties of metallic double-chain based cuprate Pr2Ba4Cu7O15-delta
• Ground-State Properties of the $t$-$J$ Model for the CuO Double-Chain Structure
• Theoretical analysis of the origin of the double-well band dispersion in the CuO double chains of Pr${}_2$Ba${}_4$Cu${}_7$O${}_{15-\delta }$ and its impact on superconductivity