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MA: Fachverband Magnetismus

MA 18: Magnetic Imaging and Sensors I

MA 18.10: Vortrag

Dienstag, 19. März 2024, 12:00–12:15, EB 301

Utilizing NV Magnetometry in Materials Research — •Hayden Binger, Young-Gwan Choi, Luke Turnbull, Claire Donnelly, and Uri Vool — Max Planck Institute for Chemical Physics of Solids, Dresden, Germany

Measuring the local magnetic field has proven invaluable to the characterization of quantum materials. While there are several established techniques capable of this, challenges still remain such as low sensitivity, invasiveness, or required cryogenic temperatures. Single spin scanning magnetometry based on the Nitrogen Vacancy (NV) is a fast growing technology that provides a route to overcome these limitations, providing noninvasive nanoscale resolution of magnetic fields up to room temperature. As it combines qubit measurements with a scanning platform, it requires expertise in various fields, including optics, RF engineering, atomic force microscopy, and quantum control. With growing interest in the field, the NV platform is moving from being highly specialized to becoming accessible to the general condensed matter physicist. In this talk I will discuss the benefits and limitations of NV magnetometry and how it can be used to characterize phenomena ranging from nanoscopic magnetic domains to local current transport. Given the advantages and usability of this technique, we believe it will soon be considered a standard addition to the material researchers repertoire.

Keywords: Nitrogen Vacancy; Domain Mapping; Current Mapping