论文标题
直接确定tomonaga-luttinger参数$ k $ in quasi-One维旋转系统
Direct determination of the Tomonaga-Luttinger parameter $K$ in quasi-one-dimensional spin systems
论文作者
论文摘要
我们测试了分析公式，以增强核磁共振速率$ t_1^{ - 1} $，通过临界自旋波动，比简单的幂律依赖性预测的纯粹的一维自旋系统，该系统最近在随机相近似中得出[M. [M.杜邦等人，物理。 Rev. B 98，094403（2018）]。该预测在两种代表性旋转化合物中的$ t_1^{ - 1} $数据的非常适合（c $ _7 $ _7 $ _7 $ h $ _ {10} $ _ 2 $ _ 2 $ _ 2 $ cubr $ _4 $（dimpy）和baco $ _2 $ _2 $ _2 $ _2 $ _2 $ _2 $ _2 $ _2 $ _2 tomonaga-luttinger-luttinger-liquid参数$ k $，与理论预测一致。
We test the analytical formula for the enhancement of the nuclear magnetic resonance rate $T_1^{-1}$ by the critical spin fluctuations, over the simple power-law dependence predicted for a purely one-dimensional spin system, recently derived in the random phase approximation [M. Dupont et al., Phys. Rev. B 98, 094403 (2018)]. This prediction is experimentally confirmed by excellent fits to the published temperature dependence of $T_1^{-1}$ data in the two representative spin compounds, (C$_7$H$_{10}$N)$_2$CuBr$_4$ (DIMPY) and BaCo$_2$V$_2$O$_8$, providing at the same time a direct and convenient experimental determination of the Tomonaga-Luttinger-liquid parameter $K$, very well in agreement with theoretical predictions.
