Stripe formation in electron-doped cuprates

Abstract

We investigate the formation of charge domain walls in an electron-doped extended Hubbard model for the superconducting cuprates. Within an unrestricted Hartree-Fock approach, extended by the introduction of slave-bosons to obtain a more proper treatment of strong correlations, we demonstrate the occurrence of stripes in the (1,1) and (1,-1) directions having one doped electron per stripe site. The different filling, direction and width of these electron-doped stripes with respect to those obtained in the hole-doped systems have interesting observable consequences, which are discussed.

4 pages, 2 encapsulated postscript figures

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• Metallic mean-field stripes, incommensurability and chemical potential in cuprates
• Time-dependent Gutzwiller approximation for the Hubbard model
• Weak phase separation and the pseudogap in the electron-doped cuprates
• Stability of metallic stripes in the extended one-band Hubbard model
• Thermal Conductivity of Pr_{1.3-x}La_{0.7}Ce_xCuO_4 Single Crystals and Signatures of Stripes in an Electron-Doped Cuprate
• Optical conductivity of the nonsuperconducting cuprate La(8-x)Sr(x)Cu(8)O(20)
• Magnetic orders in the hole doped three-band Hubbard model: spin spirals, nematicity, and ferromagnetic domain walls
• Stripe phases - possible ground state of the high-Tc superconductors
• Variational study of the extended Hubbard-Holstein model on clusters of variable site spacing
• Non-resonant Raman response of inhomogeneous structures in the electron doped $t-t^{\prime }$ Hubbard model