利用顺磁绝缘体研究奇异短程相互作用
Search for exotic short-range interactions using paramagnetic insulators
摘要：
我们描述了一个建议的实验搜索奇异的自旋耦合相互作用使用的固态顺磁绝缘体。该实验是敏感的净磁化诱导的非成对绝缘体电子之间的异国情调的相互作用与密集的，非磁性的质量在密切的接近。现有的实验已被用来设置限制的电偶极矩的电子通过探测在低温钆镓石榴石样品上施加强电场的感应磁化。通过适当的补充，包括一个可移动的源质量，这个实验可以用来探索“单极偶极子”的极化电子与独特的或前所未有的灵敏度的力量。固态、非磁性结构，结合低噪声条件和在低温下可用的极其灵敏的磁力测量，可能导致灵敏度比低于1 mm范围内的现有极限高出十个数量级。
英文摘要：
We describe a proposed experimental search for exotic spin-coupled interactions using a solid-state paramagnetic insulator. The experiment is sensitive to the net magnetization induced by the exotic interaction between the unpaired insulator electrons with a dense, non-magnetic mass in close proximity. An existing experiment has been used to set limits on the electric dipole moment of the electron by probing the magnetization induced in a cryogenic gadolinium gallium garnet sample on application of a strong electric field. With suitable additions, including a movable source mass, this experiment can be used to explore "monopole-dipole" forces on polarized electrons with unique or unprecedented sensitivity. The solid-state, non-magnetic construction, combined with the low-noise conditions and extremely sensitive magnetometry available at cryogenic temperatures could lead to a sensitivity over ten orders of magnitude greater than exiting limits in the range below 1 mm.
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