利用具有超精细相互作用的磁体中的核磁化强度进行暗物质探测
Dark matter detection using nuclear magnetization in magnet with hyperfine interaction
AI总结：
提出利用具有强超精细相互作用的MnCO₃磁体中核自旋与电子自旋的集体进动来探测轴子和暗光子等轻暗物质，并估计了感应读出和光子腔读出下的新参数空间灵敏度。
摘要：
我们考虑通过具有强超精细相互作用的磁体中的磁激发来探测质量约为10⁻⁶ eV和10⁻⁴ eV的宇宙轻暗物质（DM），即轴子和暗光子的可能性。具体而言，我们考虑将倾斜反铁磁体MnCO₃作为一种具体的候选材料。在超精细相互作用允许核自旋与电子自旋之间发生自旋转移的情况下，核自旋由于有效（电子自旋诱导的）磁场而自然地高度极化，并且彼此之间具有长程相互作用。核自旋的集体进动（即核磁振子）可以由DM场通过核子-DM相互作用产生，同时它们也通过电子-核自旋混合对电子-DM相互作用敏感。与传统的核自旋进动实验相比，该系统作为DM传感器对更高频率敏感，并且仅需施加小的静磁场。该系统还具有与核自旋混合的电子自旋集体进动，作为可用于DM探测的额外通道。我们在适当的读出装置下估计了灵敏度，例如与LC谐振电路相关联的感应拾取回路，或带有光子计数装置的光子腔。我们表明，该方法覆盖了轻玻色子DM的一个尚未探索的参数区域。
英文摘要：
We consider the possibility to detect cosmic light dark matter (DM), i.e., axions and dark photons, of mass $\sim 10^{-6}$ eV and $\sim 10^{-4}$ eV, by magnetic excitation in a magnet with strong hyperfine interaction. In particular, we consider a canted anti-ferromagnet, MnCO$_3$, as a concrete candidate material. With spin transfer between nuclear and electron spins allowed by the hyperfine interaction, nuclear spins become naturally highly polarized due to an effective (electron-spin-induced) magnetic field, and have long-range interactions with each other. The collective precession of nuclear spins, i.e., a nuclear magnon, can be generated by the DM field through the nucleon-DM interaction, while they are also sensitive to the electron-DM interaction through the electron-nuclear spin mixing. Compared with conventional nuclear-spin precession experiments, this system as a DM sensor is sensitive to higher frequency needing only a small static magnetic field applied. The system also has collective precession of electron spins, mixed with nuclear spins, as the additional channels that can be used for DM probes. We estimate the sensitivity under appropriate readout setups such as an inductive pick-up loop associated with an LC resonant circuit, or a photon cavity with a photon counting device. We show that this method covers an unexplored parameter region of light bosonic DM.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
