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MA: Fachverband Magnetismus

MA 6: Molecular Magnetism

MA 6.6: Vortrag

Montag, 18. März 2024, 11:00–11:15, EB 301

Hybrid Single Molecule Magnet - Metal System Studied with Nitrogen Vacancy Relaxometry — •Julian Skolaut¹, Zhewen Xu², Laura van Schie², Dominik Laible¹, Andrea Morales³, Simon Josephy³, Ashish Moharana¹, Eva Rentschler¹, Christian Degen², and Angela Wittmann¹ — ¹Johannes Gutenberg-University, Mainz, Germany — ²ETH, Zurich, Switzerland — ³QZabre, Zurich, Switzerland

The unceasing demand for data storage capacity continues to inspire research in the field of magnetism. Single molecule magnets (SMMs) represent a promising avenue for miniaturizing data storage units to nanometer scales.
However, integration of SMMs into devices commonly involves deposition on metal substrates, which poses many challenges. Among these, a critical concern is hybridization, which can severely alter an SMM’s magnetic properties to the point of complete quenching. Here, we aim to investigate these hybridization effects on SMMs for spintronics applications.
Our investigations employ relaxometry measurements facilitated by a scanning nitrogen vacancy magnetometry setup. In this, increased magnetic noise from the SMMs leads to a reduced lifetime of the nitrogen vacancy center, providing access to the SMM’s magnetic properties. We present first results of relaxometry measurements on metallacrown SMMs on gold surfaces.

Keywords: Single Molecule Magnets; Scanning Nitrogen Vacancy Magnetometry; Relaxometry; Hybridization