Aug 28 – 31, 2018
EPFL
Europe/Zurich timezone

【818】 Nanoscale Magnetic Imaging of Artificial Spin Ices Using Single Spins in Diamond

Aug 30, 2018, 4:00 PM
15m
CE 1 (EPFL)

CE 1

EPFL

Talk Magnetism and Spintronics at the Nanoscale Magnetism and Spintronics at the Nanoscale

Speaker

Natascha Hedrich (Universität Basel)

Description

The Nitrogen-Vacancy (NV) defect center is a stable, atomic-scale defect containing a single electron spin, which, when integrated into the tip of an atomic force microscope, enables high resolution, quantitative magnetic imaging. Here, we present NV magnetic field imaging and relaxometry to probe static magnetization and GHz spin dynamics in artificial kagome spin ice. Due to the NV center’s non-invasive nature we can probe nanoscale fluctuations even in the superparamagnetic regime. We present spatial magnetic field maps, allowing us to verify local ice rules. We further show relaxation images of spin dynamics, which indicate localized fluctuations in the 3 GHz spectral band.

Primary author

Natascha Hedrich (Universität Basel)

Co-authors

Dr Brendan Shields (University of Basel) Dr Naëmi Leo (ETH Zurich - Paul Scherrer Institut) Dr Sandra Skjaervoe (ETH Zurich - Paul Scherrer Institut) Kevin Hofhuis (ETH Zurich - Paul Scherrer Institut) Prof. Laura Heyderman (ETH Zurich - Paul Scherrer Institute) Prof. Patrick Maletinsky (University of Basel)

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