论文标题
蜂窝状irate ag $ _3 $ liir $ _2 $ o $ $ _6 $的分数化majorana激发的拉曼指纹
Raman fingerprints of fractionalized Majorana excitations in honeycomb iridate Ag$_3$LiIr$_2$O$_6$
论文作者
论文摘要
我们报告了最近发现的插入式蜂窝磁铁AG $ _3 $ liir $ _2 $ o $ _6 $的低温（降至$ \ sim $ 5 k）拉曼签名，这是一种推定的Kitaev Quantum Spinum Spin Liquid（QSL）候选人。预计Kitaev QSL将通过对纠缠旋转$ s = 1/2 $的热分数进行热激发，将其作为新兴的基本激发。我们观察到在低能磁连续体中这种分数化的证据，其温度演变具有务实的巡回主构成列表的预测费米统计量的特征。 The magnetic Raman susceptibility evinces a crossover from the conventional to a Kitaev paramagnetic state below the temperature of $\sim$80 K. Additionally, the development of the Fano asymmetry in the low frequency phonon mode and the enhancement of integrated Raman susceptibilities below the crossover temperature signifies prominent coupling between the vibrational and Majorana fermionic excitations.
We report low-temperature (down to $\sim$5 K) Raman signatures of the recently discovered intercalated honeycomb magnet Ag$_3$LiIr$_2$O$_6$, a putative Kitaev quantum spin liquid (QSL) candidate. The Kitaev QSL is predicted to host Majorana fermions as its emergent elementary excitations through a thermal fractionalization of entangled spins $S = 1/2$. We observe evidence of this fractionalization in the low-energy magnetic continuum whose temperature evolution harbours signatures of the predicted Fermi statistics obeyed by the itinerant Majorana quasiparticles. The magnetic Raman susceptibility evinces a crossover from the conventional to a Kitaev paramagnetic state below the temperature of $\sim$80 K. Additionally, the development of the Fano asymmetry in the low frequency phonon mode and the enhancement of integrated Raman susceptibilities below the crossover temperature signifies prominent coupling between the vibrational and Majorana fermionic excitations.
