6 papers
Spatially resolved quantum magnetometry and stray-field reconstruction of permalloy microdisks using boron-vacancy centers in hexagonal boron nitride
Peiting Wen, Shuyu Wen, Jiang Qu +13
Transferable hexagonal boron nitride (hBN) hosting negatively charged boron-vacancy (VB) spin defects offers a versatile platform for integrated quantum magnetometry, yet qua…
Synthetic Altermagnetism Beyond the Crystal Limit
Rodolfo A. Gallardo, Andrea M. León, Jürgen Lindner +1
Altermagnetic magnons in crystalline materials exhibit momentum-dependent splitting whose nodal structure and chiral character are governed by the point-group symmetry of the magne…
Strain-induced frequency pulling in CoFeB/Cu/Py double-vortex oscillators
Vadym Iurchuk, Jürgen Lindner, Jürgen Fassbender +1
We demonstrate piezostrain-induced frequency pulling in stacked double-vortex structures, magnetostatically coupled through the nonmagnetic spacer. We study the effect of the Cu sp…
Anatomy of localized edge modes in laterally coupled waveguides
Vadym Iurchuk, Sven Stienen, Jürgen Lindner +1
We present a systematic micromagnetic study of standing spin-wave modes in infinitely long Permalloy strips with rectangular cross-section. Using a finite-element dynamic-matrix me…
Excitation of the Gyrotropic Mode in a Magnetic Vortex by Time-Varying Strain
Vadym Iurchuk, Jürgen Lindner, Jürgen Fassbender +1
We demonstrate excitation of the gyrotropic mode in a magnetostrictive vortex by time-varying strain. The vortex dynamics is driven by a time-varying voltage applied to the piezoel…
All-electrical operation of a Curie-switch at room temperature
Vadym Iurchuk, Oleksii Kozlov, Serhii Sorokin +6
We present all-electrical operation of a FeCr-based Curie switch at room temperature. More specifically, we study the current-induced thermally-driven transition from f…