Dresden 2026 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 92: Transport – Poster
TT 92.2: Poster
Thursday, March 12, 2026, 18:00–20:00, P4
Development of an Ultra High Vacuum and Low Temperature Scanning NV Magnetometer — •Sandip Maity1, Ricardo Javier Peña Román2,1, Dinesh Pinto1,3, Isabel Pfander1, Klaus Kern1,3, and Aparajita Singha2,4 — 1Max Planck Institute for Solid State Research, Stuttgart — 2IFMP, TU Dresden, Germany — 3Institut de Physique, École Polytechnique Fédérale de Lausanne, Lausanne — 4Wurzburg-Dresden Cluster of Excellence (ct.qmat)
The nanoscale spatial resolution and calibration-free quantifiable magnetic field measurement capabilities of nitrogen-vacancy (NV) centers have enabled us to investigate the properties of magnetic spin textures with high magnetic sensitivity through scanning probe microscopy across a wide range of temperatures and pressure. In the poster I will be presenting the development of a scanning probe magnetometer capable of imaging magnetic textures under ultra-high vacuum and low temperature. Moreover, we have integrated commercial NV tips with a home-built tip holder equipped with an AFM amplifier and microwave excitation on the tip (not on the sample). This compact and modular probe holder allows us to have a magnetic image of any sample region without restriction. To exploit the quantifying nature of NV magnetometry using Optically Detected Magnetic Resonance, a coherent microwave (MW) delivery to the probe is mandatory. I will also present different means of delivering MW to the NV probes through different designs of the tip holders in a practical and versatile manner and how effective they are in coherently manipulating the NV spin states.
Keywords: NV Center; Magnetic Imaging; LT and UHV