论文标题
kagome超导体的结构CSV $ _3 $ sb $ _5 $在电荷密度波状态
The structure of kagome superconductors CsV$_3$Sb$_5$ in the charge density wave states
论文作者
论文摘要
电荷密度波状态在AV $ _3 $ SB $ _5 $（A = K，RB，CS）Kagome超导体仍然难以捉摸，三个可能的$ 2A \ TIME2A \ TIME2A \ TIME2C $候选人：Tri-Hexagonal，davagogonal，david of-times2c $ and-tri-hexagonal，david，daviD，david和他们的混合物。在这项研究中，我们对$ 2A \ times2a \ times2a \ times2c $ csv $ _3 $ _3 $ SB $ _5 $ _5 $结构进行了对核四极共振（NQR）和核磁共振（NMR）光谱的系统第一原理调查。通过将我们的模拟与实验数据进行比较，我们得出的结论是，NQR光谱表明三甲状腺大部分结构是CSV $ _3 $ _3 $ SB $ _5 $的正确结构，其电荷密度波相变。从三甲状腺饰结构获得的NMR计算结果也与实验数据一致。
The structure of charge density wave states in AV$_3$Sb$_5$ (A = K, Rb, Cs) kagome superconductors remains elusive, with three possible $2a\times2a\times2c$ candidates: tri-hexagonal, star-of-David, and their mixture. In this study, we conducted a systematic first-principles investigation of the nuclear quadrupole resonance (NQR) and nuclear magnetic resonance (NMR) spectra for the $2a\times2a\times2c$ CsV$_3$Sb$_5$ structures. By comparing our simulations with experimental data, we have concluded that the NQR spectrum indicates the tri-hexagonal structure as the proper structure for CsV$_3$Sb$_5$ after its charge density wave phase transition. The NMR calculation results obtained from the tri-hexagonal structure are also consistent with the experimental data.
