Competing orders in the honeycomb lattice $t$-$J$ model Article Swipe

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Zheng-Tao Xu , Zheng‐Cheng Gu , Shuo Yang ·

YOU? · · 2022 · Open Access · · DOI: https://doi.org/10.48550/arxiv.2208.13681

We study the honeycomb lattice $t$-$J$ model using the fermionic tensor network approach. By examining the ansatz with various unit cells, we discover several different stripe states with different periods that compete strongly with uniform states. At very small doping $δ< 0.05$, we find almost degenerate uniform $d$-wave superconducting ground states coexisting with antiferromagnetic order. While at larger doping $δ> 0.05$, the ground state is an approximately half-filled stripe-ordered state, where the stripe period decreases with increasing hole doping $δ$. Furthermore, the stripe states with the lowest variational energy always display $d_{x^2-y^2}$-wave pairing symmetry. The similarity between our results and those on the square lattice contributes to a more comprehensive understanding of doped Mott insulators.

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Type: preprint
Language: en
Landing Page: http://arxiv.org/abs/2208.13681
PDF: https://arxiv.org/pdf/2208.13681
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Cited By: 1
Related Works: 10
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DOI: https://doi.org/10.48550/arxiv.2208.13681

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Title: Competing orders in the honeycomb lattice $t$-$J$ model

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Type: preprint

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Language: en

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Publication year: 2022

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Publication date: 2022-08-29

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Authors: Zheng-Tao Xu, Zheng‐Cheng Gu, Shuo Yang

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Landing page: https://arxiv.org/abs/2208.13681

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PDF URL: https://arxiv.org/pdf/2208.13681

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Concepts: Lattice (music), Condensed matter physics, Statistical physics, Materials science, Physics, Acoustics

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Cited by: 1

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