Radio Frequency Electrical Resistance Measurement under Destructive Pulsed Magnetic Fields

TL;DR

This paper introduces a radio frequency reflection method with a custom circuit to accurately measure electrical resistance under destructive pulsed magnetic fields exceeding 100 T, improving measurement precision.

Contribution

It presents a novel resistance measurement technique using RF reflection and a flexible circuit to reduce noise, enabling precise resistance measurements in extreme magnetic field conditions.

Findings

Successful determination of magnetoresistance using phase analysis

Reduction of noise in measurements due to custom circuit design

Enhanced accuracy in resistance measurement under high magnetic fields

Abstract

We developed a resistance measurement using radio frequency reflection to investigate the electrical transport characteristics under destructive pulsed magnetic fields above 100 T. A homemade flexible printed circuit for a sample stage reduced the noise caused by the induced voltage from the pulsed magnetic fields, improving the accuracy of the measurements of the reflected waves. From the obtained reflectance data, the absolute value of the magnetoresistance was successfully determined by using a phase analysis with admittance charts. These developments enable more accurate and comprehensive measurements of electrical resistance in pulsed magnetic fields.