High Precision, Low Excitation Capactiance Measurement Methods from 10 mK- to Room-Temperature

TL;DR

This paper presents a highly accurate capacitance measurement method applicable from millikelvin to room temperature, enabling detailed study of quantum devices and two-dimensional electron systems.

Contribution

The paper introduces a novel capacitance measurement approach that maintains high precision across a wide temperature range, improving the analysis of quantum systems.

Findings

Effective measurement of local particle charging properties.

Revealed delicate properties of high-mobility 2D electron systems.

Demonstrated accuracy from mK to room temperature.

Abstract

Capacitance measurement is a useful technique in studying quantum devices, as it directly probes the local particle charging properties, i.e. the system compressibility. Here we report one approach which can measure capacitance from mK to room temperature with excellent accuracy. Our experiments show that such a high-precision technique is able to reveal delicate and essential properties of high-mobility two-dimensional electron systems.