Modified electrical transport probe design for standard magnetometer

TL;DR

This paper introduces a modified probe design for standard magnetometers that simplifies sample mounting and exchange, reducing setup time for electrical transport measurements on various materials.

Contribution

A novel modification to the MPMS SQUID magnetometer probe that allows quick sample exchange through a specially designed socket, addressing the challenge of small sample space.

Findings

Successful implementation of the modified probe with test results on Bi2Te2Se

Enhanced efficiency in sample mounting and measurement process

Potential for broader application in material transport measurements

Abstract

Making electrical transport measurements on a material is often a time consuming process that involves testing a large number of samples. It is thus inconvenient to wire up and rewire samples on to a sample probe. We therefore present a method of modifying Quantum Design's MPMS SQUID magnetometer transport probe that simplifies the process of sample mounting. One of the difficulties to overcome is the small diameter of the sample space. A small socket is designed and mounted on the probe so that various samples mounted on individual headers can be readily exchanged in the socket. We also present some test results on the topological insulator Bi2Te2Se using the modified probe.