Bulletin of the American Physical Society
2023 APS March Meeting
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session F57: Quantum Phenomena and Sensing in Ordered Magnets
8:00 AM–11:00 AM,
Tuesday, March 7, 2023
Room: Room 303
Sponsoring
Unit:
GMAG
Chair: Debanjan Polley, Lawrence Berkeley National Laboratory
Abstract: F57.00002 : All-diamond scanning probes for high-performance and robust nanoscale magnetometry
8:36 AM–8:48 AM
Presenter:
Felipe Favaro de Oliveira
(Qnami)
Authors:
Felipe Favaro de Oliveira
(Qnami)
Gediminas Seniutinas
(Qnami)
Marcelo Gonzalez
(Qnami)
Brendan Shields
(University of Basel)
Liza Zaper
(Qnami)
Peter Rickhaus
(Qnami)
Martino Poggio
(University of Basel)
Patrick Maletinsky
(University of Basel)
At the core of this technology is an all-diamond scanning probe hosting a single NV center within a few tenths of nanometers from the tip apex4. In this work, the latest advancements in the fabrication and design of diamond scanning probes will be presented, including high resolution measurements with out-of-plane NV centers5, as well as measurements under high (>200 mT) bias fields using in-plane NV centers embedded into diamond probes. We also show that the speed and precision of scanning NV magnetometers can be improved by a factor of 6 by coupling the NV center to parabola-shaped scanning tips6. These developments will enable more robust, user-friendly, and reliable magnetometry measurements of a variety of materials at the nanoscale.
References:
1 Nature 549, no. 7671 (2017): 252-256.
2 Nano letters 19, no. 3 (2019): 1682-1687.
3 Nature Physics 9, no. 4 (2013): 215-219.
4 Nature nanotechnology 7, no. 5 (2012): 320-324.
5 Applied Physics Letters 115, no. 19 (2019): 192401.
6 Physical Review Applied 14, no. 6 (2020): 064007.
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