论文标题
实验性搜索使用光学极化蒸气和稀土铁石榴石的异国风情自旋旋转依赖性相互作用
Experimental search for an exotic spin-spin-velocity-dependent interaction using an optically polarized vapor and a rare-earth iron garnet
论文作者
论文摘要
我们报告了对RB原子的极化电子与固态质量的极化电子之间的异国旋转自旋依赖性相互作用的实验搜索，从而违反了时间反转和平等对称性。该搜索靶向由相互作用引起的微小有效磁场。基于光学极化的RB蒸气的无自旋交换无弛豫磁力计是极化电子和高敏化检测器的关键元素。降低铁石榴石（Dyig）用作极化质量，在240 K左右的临界温度下具有极小的磁化，并且旋转密度高。为了减少磁化强度，这是主要的系统效应之一，家庭建造的冷却系统控制质量温度。据我们所知，这是第一次使用补偿的Ferrimagnet Dyig作为极化质量来寻找异国情调的自旋依赖性相互作用。该实验设定了对厘米相互作用范围内电子耦合强度的最严格限制，尤其是$ g_v^e g_v^e <10^e <10^{4} $ at $λ= 2 $ cm。
We report an experimental search for an exotic spin-spin-velocity-dependent interaction between polarized electrons of Rb atoms and polarized electrons of a solid-state mass, violating both the time-reversal and parity symmetries. This search targets a minute effective magnetic field induced by the interaction. A spin-exchange relaxation-free (SERF) magnetometer based on an optically polarized Rb vapor is the key element for both a source of polarized electrons and a high-sensitivity detector. A dysprosium iron garnet (DyIG) serves as the polarized mass, with an extremely small magnetization at the critical temperature around 240 K and a high spin density. To reduce the magnetization, one of major systematic effects, a home-built cooling system controls the mass temperature. To our knowledge, this is the first search for an exotic spin-dependent interaction using the compensated ferrimagnet DyIG as a polarized mass. The experiment set the most stringent limit on the electron-electron coupling strength in the centimeter interaction range, in particular $g_V^e g_V^e <10^{4}$ at $λ=2$ cm.
