Dresden 2020 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 45: Skyrmions III (joint session MA/TT)

TT 45.10: Vortrag

Mittwoch, 18. März 2020, 17:30–17:45, POT 6

Nanoscale magnetic resonance imaging at room temperature using single spins in diamond — •Tetyana Shalomayeva1, Jianpei Geng1, Qi-Chao Sun1, Rainer Stöhr1, Stuart Parkin2, and Jörg Wrachtrup1,313rd Institute of Physics, University of Stuttgart — 2Max Planck Institute of Microstructure Physics — 3Max Planck Institute for Solid State Research

Due to the significant development of compounds hosting skyrmions at ambient conditions [1] the need of the quantitative real-space imaging of the magnetic textures is high nowadays. As an atomic-sized magnetic field sensor we use the point lattice defect in diamond, which consists of carbon vacancy and substitutional nitrogen atom (NV centre). For the scanning probe experiments single NV centre is integrated into the monolithic nanopillar, which plays the role of the sharp end of the AFM tip.

In this contribution we demonstrate the scanning probe measurement of the magnetic helical structure on the surface of thin Mn1.4Pt0.9Pd0.1Sn lamella via off-axial fluorescence quenching at room temperature and further numerical extraction of B-field.

[1] A.K. Nayak et al. Nature 548, 561-566 (2017)

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