论文标题
使用NV中心检测出现在自旋液体中的旋转液体效应的提议
Proposal to detect emergent gauge field and its Meissner effect in spin liquids using NV Centers
论文作者
论文摘要
我们表明，NV中心可以在旋转液体中某些相变的某些相变中提供明显的新出现量规场的特征。我们考虑放松率$ 1/t_1 $ 1/t_1 $ z_0 $的钻石NV中心的晶体上方，由二维层组成的晶体上，该层带有$ u（1）$ u（1）$ Quantum spin液体，带有Spinon Fermi表面。我们表明，在Spinon配对从$ U（1）$到$ \ Mathbb {z} _2 $旋转液体的过渡期间，放松速率迅速下降到配对过渡以下。下降速度要比能量差距的打开率要快得多。取而代之的是，其高度和宽度的唯一$ z_0 $依赖性的快速跌落是量规场的Meissner效应的签名。我们识别有机ET化合物，该化合物在6K处具有相变，作为对该现象的实验观察的候选者。
We show that NV centers could provide distinct signatures of emergent gauge fields in certain phase transitions in spin liquids. We consider the relaxation rate $1/T_1$ of a diamond NV center placed a distance $z_0$ above a crystal consisting of two dimensional layers which hosts a $U(1)$ quantum spin liquid with spinon Fermi surface. We show that during a spinon pairing transition from a $U(1)$ to a $\mathbb{Z}_2$ spin liquid, the relaxation rate exhibits a rapid fall just below the pairing transition. The drop is much faster than what can be accounted for by the opening of the energy gap. Instead, the rapid fall with a unique $z_0$ dependence of its height and width, is the signature of the Meissner effect of the gauge field. We identify the organic ET compound which has a phase transition at 6K as a candidate for the experimental observation of this phenomenon.
