7 papers
Methods for traceable scanning magnetometry using single nitrogen vacancy centers in diamond: determining orientation, distance and localization
Nikhita Khera, Ephraim Spindler, Yanis Abdedou +7
Individual, scannable nitrogen vacancy (NV) centers in single crystal diamond nanostructures enable nanoscale, quantitative imaging of magnetic stray fields. Nevertheless, importan…
Phase-dependent parametric amplification of propagating spin waves in YIG nanostructures enabled by local inhomogeneities
Akira Lentfert, Ephraim Spindler, Björn Heinz +2
As magnonics evolves towards non-conventional computing, the development of phase-conserving and phase-sensitive amplification mechanisms becomes increasingly important. A particul…
Nonlinear frequency shift and bistability of magnon-polarons
Kevin Künstle, Matthias Wagner, Philipp Knaus +7
We investigate the nonlinear dynamics of strongly coupled surface acoustic waves (SAWs) and spin waves (SWs) in a magnetoacoustic resonator based on a YIG/ZnO heterostructure by co…
Direct Laser Writing of Ferromagnetic Nickel Utilizing the Principle of Sensitized Triplet-Triplet Annihilation Upconversion
Kristin E. J. Kühl, Katharina Rediger, Nikhita Khera +5
Direct laser writing of ferromagnetic microstructures is of great interest for sensing and data storage in compact three-dimensional architectures. However, reliable direct laser w…
Ratchet motion of magnetic skyrmions driven by surface acoustic sawtooth waves
Philipp Schwenke, Ephraim Spindler, Vitaliy I. Vasyuchka +3
The manipulation of skyrmions by surface acoustic waves (SAW) has garnered significant interest in the field of spintronic devices. Previous studies established that skyrmions can…
Nanoscale Dipolar Fields in Artificial Spin Ice Probed by Scanning NV Magnetometry
Ephraim Spindler, Vinayak Shantaram Bhat, Elke Neu +2
We investigate dipolar coupling fields in two square-lattice artificial spin ice (ASI) systems with different lattice constants using scanning probe microscopy based on a single ni…