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arXiv · 2210.01996

A quantum spin liquid phase in the Kitaev-Hubbard model

Shaojun Dong·Hao Zhang·Chao Wang·Meng Zhang·Yong-Jian Han·Lixin He
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Abstract

The quantum spin liquid (QSL) state has been searched intensively in Kitaev-like materials, such as the Iridium oxides $A_2$IrO$_3$ and $\alpha$-RuCl$_3$. The half-filled Kitaev-Hubbard model with bond dependent hopping terms is used to describe the Kitaev-like materials, which is calculated using the state-of-the-art fermionic projected entangled pair states (fPEPS) method. We find a QSL phase near the Mott insulator transition, which has a strong first-order transition to the semi-metal phase with the decrease of Hubbard $U$. We suggest that a promising routine to find the QSL is to find the Iridium oxides that are near the Mott insulator transitions.

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Shaojun Dong, Hao Zhang, Chao Wang, Meng Zhang, Yong-Jian Han, Lixin He. 2022-10-05. A quantum spin liquid phase in the Kitaev-Hubbard model. https://arxiv.org/abs/2210.01996

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