论文标题
沮丧的A位点尖晶石Cual2O4中的动态旋转波动
Dynamic Spin Fluctuations in the Frustrated A-site Spinel CuAl2O4
论文作者
论文摘要
我们进行了核磁共振（NMR）和MUON自旋松弛（μSR）实验，以识别沮丧的量子A位点尖晶石Cual2O4的磁接地态。我们的结果验证了基态没有表现出远距离的磁顺序，但是类似玻璃的过渡表现为t* = 2.3 k。但是，高斯的形状和下方μSR光谱的弱纵向场依赖性t*表明基态具有动态的自旋波动，与传统旋转镜的那些不同。
We performed nuclear magnetic resonance (NMR) and muon spin relaxation (μSR) experiments to identify the magnetic ground state of the frustrated quantum A-site spinel, CuAl2O4. Our results verify that the ground state does not exhibit a long-range magnetic ordering, but a glass-like transition manifests at T*=2.3 K. However, the Gaussian shape and the weak longitudinal field dependence of μSR spectra below T* show that the ground state has dynamic spin fluctuations, distinct from those of conventional spin-glasses.
