Nanoscale electric-field imaging based on a quantum sensor and its charge-state control under ambient condition

Ke Bian, Wentian Zheng, Xianzhe Zeng, Xiakun Chen, Rainer Stöhr, Andrej Denisenko, Sen Yang, Jörg Wrachtrup () and Ying Jiang ()
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Ke Bian: Peking University
Wentian Zheng: Peking University
Xianzhe Zeng: Peking University
Xiakun Chen: Peking University
Rainer Stöhr: University of Stuttgart and Institute for Quantum Science and Technology (IQST)
Andrej Denisenko: University of Stuttgart and Institute for Quantum Science and Technology (IQST)
Sen Yang: The Chinese University of Hong Kong, Shatin, New Territories
Jörg Wrachtrup: University of Stuttgart and Institute for Quantum Science and Technology (IQST)
Ying Jiang: Peking University

Nature Communications, 2021, vol. 12, issue 1, 1-9

Abstract: Abstract Nitrogen-vacancy (NV) centers in diamond can be used as quantum sensors to image the magnetic field with nanoscale resolution. However, nanoscale electric-field mapping has not been achieved so far because of the relatively weak coupling strength between NV and electric field. Here, using individual shallow NVs, we quantitatively image electric field contours from a sharp tip of a qPlus-based atomic force microscope (AFM), and achieve a spatial resolution of ~10 nm. Through such local electric fields, we demonstrated electric control of NV’s charge state with sub-5 nm precision. This work represents the first step towards nanoscale scanning electrometry based on a single quantum sensor and may open up the possibility of quantitatively mapping local charge, electric polarization, and dielectric response in a broad spectrum of functional materials at nanoscale.

Date: 2021
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DOI: 10.1038/s41467-021-22709-9

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