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arXiv · 0903.1167

Incommensurate Antiferromagnetism Coexisting with Superconductivity in Two-Dimensional d-p Model

Takashi Yanagisawa·Mitake Miyazaki·Kunihiko Yamaji
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Abstract

Numerical studies of the two-dimensional d-p model using the Gutzwiller ansatz have exhibited the incommensurate antiferromagnetic state coexisting with superconductivity in the under- and lightly doped regions. Our results are based on the variational Monte Carlo method for the three-band Hubbard model with d and p orbitals. We obtained the finite superconducting condensation energy for the coexistent sate at the doping rate $x=1/8$, 1/12, and 1/16, up to the systems of 256 unit cells with 768 atoms (oxygen and copper atoms). The phase diagram for the hole-doped case is consistent with recent results reported for layered high temperature cuprates.

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Takashi Yanagisawa, Mitake Miyazaki, Kunihiko Yamaji. 2009-03-06. Incommensurate Antiferromagnetism Coexisting with Superconductivity in Two-Dimensional d-p Model. https://doi.org/10.1143/jpsj.78.013706

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