Cryogenic Nitrogen-Vacancy Scanning Microscope

ORAL

Abstract

The Nitrogen-Vacancy (NV) electron spin is a quantum sensor of magnetic field, with high sensitivity in a wide range of frequencies and extremely high spatial resolution. Most NV magnetometry experiments are performed by stationary NVs in a bulk crystal measuring a nearby sample. This limits the spatial resolution to the optical diffraction limit and strongly limits the sample which can be measured. Recently, a scanning technique was developed to overcome these issues, in which the NV is located on a tip that can be scanned over a sample.
In addition, most NV experiments are performed at room temperatures, while many of the unexplored phenomena in condensed matter physics occur at cryogenic temperatures.
Our lab has been working on a setup which aims to address both issues, implementing a cryogenic scanning NV setup. This setup allows us to work in a variable temperature from ~1.7K up to room temperature. In this talk we describe the details of our scanning microscope and its advantages in measuring condensed-matter phenomeana, and present preliminary scanning results.

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Presenters

  • Assaf Hamo

    Harvard University

Authors

  • Uri Vool

    Harvard University, Physics, Harvard University, John Harvard Distinguished Science Fellowship, Harvard University

  • Assaf Hamo

    Harvard University

  • Ziwei Qiu

    Harvard University, SEAS, Harvard University

  • Tony Zhou

    Department of Physics, Harvard University & School of Engineering and Applied Sciences, Harvard University, Harvard University

  • Amir Yacoby

    Harvard University, Department of Physics, Harvard University