@article{c12cd2a832254469b5a3c2c3759caf2b,
title = "Implementing microwave impedance microscopy in a dilution refrigerator",
abstract = "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.",
author = "Zhanzhi Jiang and Chong, {Su Kong} and Peng Zhang and Peng Deng and Shizai Chu and Shahin Jahanbani and Wang, {Kang L.} and Keji Lai",
note = "Funding Information: This research was funded by the U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences, under Award No. DE-SC0019025. The instrumentation work was supported by the Army Research Office and accomplished under Grant Nos. W911NF-17-1-0542 and W911NF-18-1-0467. K.L.W. acknowledges support from the National Science Foundation the Quantum Leap Big Idea under Grant No. 1936383 and the U.S. Army Research Office MURI program under Grant No. W911NF-20-2-0166. The authors thank P. Wang and S. Wu for providing the WTe sample and Z. Yao for sharing the equipment. 2 Publisher Copyright: {\textcopyright} 2023 Author(s).",
year = "2023",
month = may,
day = "1",
doi = "10.1063/5.0138831",
language = "English",
volume = "94",
journal = "Review of Scientific Instruments",
issn = "0034-6748",
publisher = "American Institute of Physics Publising LLC",
number = "5",
}