基塔耶夫-哈伯德模型中可能的量子自旋液相

IF 3.5 2区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Chinese Physics Letters Pub Date : 2023-11-09 DOI:10.1088/0256-307x/40/12/126403

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

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引用次数: 0

摘要

摘要:量子自旋液体(QSL)态在基塔耶夫类材料中得到了广泛的研究，如铱氧化物a2iro 3和α -RuCl 3。利用最先进的费米子投射纠缠对态(fPEPS)方法，用带键依赖跳跃项的半填充Kitaev-Hubbard模型来描述类kitaev材料。我们发现在Mott绝缘子相变附近有一个QSL相，随着Hubbard U的减小，QSL相向半金属相有很强的一阶相变。我们建议找到QSL的一个有希望的常规方法是找到靠近Mott绝缘体跃迁的铱氧化物。

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A possible quantum spin liquid phase in the Kitaev-Hubbard model

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 α -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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来源期刊

Chinese Physics Letters 物理-物理：综合

CiteScore

5.90

自引率

8.60%

发文量

13238

审稿时长

4 months

期刊介绍： Chinese Physics Letters provides rapid publication of short reports and important research in all fields of physics and is published by the Chinese Physical Society and hosted online by IOP Publishing.