一种廉价、可配置的双音电子自旋共振谱仪
An Inexpensive, Configurable Two-Tone Electron Spin Resonance Spectrometer
AI总结：
本文提出一种由FPGA控制、基于现成部件构建的廉价可配置双音ESR谱仪，可在宽频范围及非标准频带工作，并通过Cr$_7$Mn分子纳米磁体验证其性能。
摘要：
电子自旋共振（ESR）是表征和操控自旋系统的有力工具，但商用ESR谱仪可能价格昂贵，且通常被设计为仅工作在较窄的频带内。本工作提出了一种廉价谱仪，当与易于设计的谐振器耦合时，可在宽广频率范围内实现ESR，包括标准频带之外的频率。它既可以在单一频率下工作，也可以同时在两个频率下工作。该谱仪由现成部件构建，并由现场可编程门阵列（FPGA）控制，通过重新配置FPGA以及添加或更换组件，可以轻松增加新的功能。我们利用分子纳米磁体Cr$_7$Mn展示了该谱仪的能力。
英文摘要：
Electron spin resonance (ESR) is a powerful tool for characterizing and manipulating spin systems, but commercial ESR spectrometers can be expensive and designed to work in narrow frequency bands. This work presents an inexpensive spectrometer that, when coupled with easy-to-design resonators, enables ESR over a broad frequency range, including at frequencies outside the standard bands. It can operate at either a single frequency or at two frequencies simultaneously. The spectrometer is built from off-the-shelf parts and controlled by a field programmable gate array (FPGA), and new capabilities can be easily added by reconfiguring the FPGA and adding or swapping components. We demonstrate the capabilities of the spectrometer using the molecular nanomagnet Cr$_7$Mn.
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。
