Spinon Kondo lattice in quantum spin liquids using the slave-rotor formalism,Physical Review B

当前位置： X-MOL 学术 › Phys. Rev. B › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Spinon Kondo lattice in quantum spin liquids using the slave-rotor formalism
Physical Review B ( IF 3.2 ) Pub Date : 2024-09-10 , DOI: 10.1103/physrevb.110.115116
Xia-Ming Zheng ₁ , Mehdi Kargarian ₁

Affiliation

Motivated by recent experimental observations of Kondo resonances in cobalt atoms on single layer

1 T − {TaSe}_{2}

, we theoretically investigate the effect of coupling a U(1) quantum spin liquid with a spinon Fermi surface to a lattice of Anderson impurities. Within the slave-rotor formalism, we find that above a critical coupling strength between the spin liquid and impurity lattice, the spinons hybridize to form heavy quasiparticles near the Fermi level, realizing a spinon Kondo lattice phase analogous to heavy fermion materials. Using the Bethe-Salpeter equation and accounting for emergent gauge fluctuations, we compute the spectral density and density of states, revealing the formation of spinon-chargon bound states in the spinon Kondo lattice phase. We characterize the thermodynamic and spectroscopic signatures of this phase, demonstrating specific heat and neutron scattering responses distinct from a pure quantum spin liquid. Our findings establish the spinon Kondo lattice as a framework to study the rich physics of spin liquids.

中文翻译：

使用从转子形式主义的量子自旋液体中的自旋近藤晶格

受到最近单层钴原子近藤共振实验观察的启发

1 T − {TaSe}_{2}

，我们从理论上研究了具有自旋费米表面的 U(1) 量子自旋液体与安德森杂质晶格的耦合效应。在从转子形式中，我们发现在自旋液体和杂质晶格之间的临界耦合强度之上，自旋子杂化形成费米能级附近的重准粒子，实现类似于重费米子材料的自旋近藤晶格相。使用 Bethe-Salpeter 方程并考虑出现的规范涨落，我们计算了谱密度和态密度，揭示了自旋近藤晶格相中自旋-电荷束缚态的形成。我们表征了该相的热力学和光谱特征，证明了与纯量子自旋液体不同的比热和中子散射响应。我们的研究结果建立了自旋近藤晶格作为研究自旋液体丰富物理的框架。

更新日期：2024-09-10

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南