Implementing microwave impedance microscopy in a dilution refrigerator

Zhanzhi Jiang, Su Kong Chong, Peng Zhang, Peng Deng, Shizai Chu, Shahin Jahanbani, Kang L. Wang, Keji Lai

研究成果: Article同行評審

2 引文 斯高帕斯(Scopus)

摘要

We report the implementation of a dilution refrigerator-based scanning microwave impedance microscope with a base temperature of ∼100 mK. The vibration noise of our apparatus with tuning-fork feedback control is as low as 1 nm. Using this setup, we have demonstrated the imaging of quantum anomalous Hall states in magnetically (Cr and V) doped (Bi, Sb)2Te3 thin films grown on mica substrates. Both the conductive edge modes and topological phase transitions near the coercive fields of Cr- and V-doped layers are visualized in the field-dependent results. Our study establishes the experimental platform for investigating nanoscale quantum phenomena at ultralow temperatures.

原文English
文章編號053701
期刊Review of Scientific Instruments
94
發行號5
DOIs
出版狀態Published - 2023 5月 1

All Science Journal Classification (ASJC) codes

  • 儀器

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