Modular thermal Hall effect measurement setup for fast-turnaround screening of materials over wide temperature range using capacitive thermometry
Modular thermal Hall effect measurement setup for fast-turnaround screening of materials over wide temperature range using capacitive thermometry
复制标题
DOI：
10.1063/1.5108512
复制
发表时间：
2019-10-01
影响因子：
1.6
通讯作者：
Park, Je-Geun
中科院分区：
文献类型：
--
作者：
Kim, Ha-Leem;Coak, Matthew John;Park, Je-Geun
我们展示了一种简单且易于构建的探头，该探头设计用于加载到广泛使用的量子设计物理特性测量系统（PPMS）低温恒温器中，具有可拆卸的屏蔽样品圆盘部分和三对同轴电缆的强大散热。它原则上可以与任何低温恒温器一起使用。我们的模块化圆盘设计具有辐射屏蔽，用于在处理时对精密样品空间进行隔热和保护，并允许在选择的样品圆盘上构建受益于屏蔽同轴布线的各种实验设置。吸盘可以快速轻松地切换，该系统利用了易于使用的PPMS系统的简单但极其稳定的温度和磁场控制。我们专注于设计用于测量热霍尔效应的设置，并表明该系统可以在很宽的温度范围内产生前所未有的分辨率，并具有快速的样品安装或更换，允许大量的潜在样品被筛选这种新的物理。我们的设计旨在使这些敏感但具有挑战性的测量快速，可靠，廉价，易于访问，通过使用标准，广泛的基础低温恒温器和模块化可移动样品台圆盘系统，以允许快速周转和筛选大量候选样品用于潜在的新热霍尔物理。由AIP Publishing授权出版。
We demonstrate a simple and easy-to-build probe designed to be loaded into a widely available Quantum Design Physical Properties Measurement System (PPMS) cryostat, with a detachable shielded sample puck section and robust heat sinking of three pairs of coaxial cables. It can be in principle used with any low-temperature cryostat. Our modular puck design has a radiation shield for thermal isolation and protection of the delicate sample space while handling and allows any variety of experimental setup benefiting from shielded coaxial wiring to be constructed on a selection of sample pucks. Pucks can be quickly and easily switched, and the system makes use of the simple yet extremely stable temperature and magnetic field control of the easy-to-use PPMS system. We focus on a setup designed for measurements of the thermal Hall effect and show that this system can yield unprecedented resolution over a wide temperature range and with rapid sample mounting or changing-allowing a large collection of potential samples to be screened for this novel physics. Our design aims to make these sensitive but challenging measurements quick, reliable, cheap, and accessible, through the use of a standard, widespread base cryostat and a system of modular removable sample stage pucks to allow quick turnaround and screening of a large number of candidate samples for potential new thermal Hall physics. Published under license by AIP Publishing.