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arXiv · 2303.12348

Superconductivity in lightly doped Hubbard model on honeycomb lattice

Cheng Peng·D. N. Sheng·Hong-Chen Jiang
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Abstract

We have performed large-scale density-matrix renormalization group studies of the lightly doped Hubbard model on the honeycomb lattice on long three and four-leg cylinders. We find that the ground state of the system upon lightly doping is consistent with that of a superconducting state with coexisting quasi-long-range superconducting and charge density wave orders. Both the superconducting and charge density wave correlations decay as a power law at long distances with corresponding exponents $K_{sc}<2$ and $K_c<2$. On the contrary, the spin-spin and single-particle correlations decay exponentially, although with relatively long correlation lengths.

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Cheng Peng, D. N. Sheng, Hong-Chen Jiang. 2023-03-22. Superconductivity in lightly doped Hubbard model on honeycomb lattice. https://arxiv.org/abs/2303.12348

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