Mechanism of formation of half-doped stripes in underdoped cuprates

Abstract

Using a variational Monte-Carlo approach with a recently proposed stripe wave function, we showed that the strong correlation included in a t-J-type model has essentially all the necessary ingredients to form these stripes with modulations of charge density, spin magnetization, and pair field. If a perturbative effect of electron-phonon coupling to renormalize the effective mass or the hopping rate of holes is considered with the model, we find the half-doped stripes, which has on the average one half of a hole in one period of charge modulation, to be most stable, energetic wise in the underdoped region, $1/12\le \delta \le 1/8$. This is in good agreement with the observation in the neutron scattering experiments. We also find long range Coulomb interaction to be less effective in the formation of half-doped stripes.

4 pages, 4 figures

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Cited by in corpus (15)

• Stripe order in the underdoped region of the two-dimensional Hubbard model
• Competing states in the t-J model: uniform d-wave state versus stripe state
• Ground State Phase Diagram of the $t$-$t^{\prime }$-$J$ model
• Ground state phase diagram of the doped Hubbard model on the 4-leg cylinder
• Period 4 stripe in the extended two-dimensional Hubbard model
• Anomalies in the pseudogap phase of the cuprates: Competing ground states and the role of umklapp scattering
• Evolution of Pairing Orders between Pseudogap and Superconducting Phases of Cuprate Superconductors
• Pairing Properties of the $t$-$t^{\prime }$-$t^{\prime \prime }$-$J$ model
• Density-matrix-renormalization-group-based downfolding of the three-band Hubbard model: the importance of density-assisted hopping
• Genesis of charge orders in high temperature superconductors
• Phonon enhancement of electronic orders and negative isotope effect in the Hubbard-Holstein model on a square lattice
• Fractional charge and emergent mass hierarchy in diagonal two-leg t-J cylinders
• Grand-canonical variational approach for the t-J model
• Density Matrix Embedding Theory and Strongly Correlated Lattice Systems
• Formation and local symmetry of Holstein polaron in t-J model