52 citations · 151 across the 19 of their papers we have counts for
19 papers
Spatial resolution and point spread function of high-resolution scanning SQUID microscopy probes
Jan Ullmann, Katharina Kress, Timur Weber +5
Superconducting quantum interference devices (SQUIDs) show exceptional sensitivity to magnetic flux. In scanning SQUID microscopy (SSM), SQUID size and its distance to the sample a…
Imaging short- and long-range magnetic order in a quantum anomalous Hall insulator
Andriani Vervelaki, Boris Gross, Daniel Jetter +11
The quantum anomalous Hall effect has been observed in several magnetically doped topological insulators, where its robustness and macroscopic magnetization properties have been ta…
Measuring high field gradients of cobalt nanomagnets in a spin-mechanical setup
Felix Hahne, Teresa Klara Pfau, Liza Žaper +5
Hybrid systems composed of a single nitrogen-vacancy center spin magnetically coupled to a macroscopic mechanical resonator constitute promising platforms for the realization of qu…
Advanced SQUID-on-lever scanning probe for high-sensitivity magnetic microscopy with sub-100-nm spatial resolution
Timur Weber, Daniel Jetter, Jan Ullmann +13
Superconducting quantum interference devices (SQUIDs) are exceptionally sensitive magnetometers capable of detecting weak magnetic fields. Miniaturizing these devices and integrati…
Magnetically-controlled Vortex Dynamics in a Ferromagnetic Superconductor
Joseph Alec Wilcox, Lukas Schneider, Estefani Marchiori +11
Ferromagnetic superconductors are exceptionally rare because the strong ferromagnetic exchange field usually destroys singlet superconductivity. EuFe(AsP), an i…
Imaging magnetic switching in orthogonally twisted stacks of a van der Waals antiferromagnet
Alexander J Healey, Cheng Tan, Boris Gross +9
Stacking van der Waals magnets holds promise for creating new hybrid materials with properties that do not exist in bulk materials. Here we investigate orthogonally twisted stacks…
Simulation and measurement of stray fields for the manipulation of spin-qubits in one- and two-dimensional arrays
Michele Aldeghi, Rolf Allenspach, Andriani Vervelaki +5
The inhomogeneous magnetic stray field of micromagnets has been extensively used to manipulate electron spin qubits. By means of micromagnetic simulations and scanning superconduct…
Imaging strain-controlled magnetic reversal in thin CrSBr
Kousik Bagani, Andriani Vervelaki, Daniel Jetter +9
Two-dimensional materials are extraordinarily sensitive to external stimuli, making them ideal for studying fundamental properties and for engineering devices with new functionalit…
Imaging magnetic spiral phases, skyrmion clusters, and skyrmion displacements at the surface of bulk CuOSeO
E. Marchiori, G. Romagnoli, L. Schneider +8
Surfaces -- by breaking bulk symmetries, introducing roughness, or hosting defects -- can significantly influence magnetic order in magnetic materials. Determining their effect on…
Magnetic properties of an individual Magnetospirillum gryphiswaldense cell
Mathias M. Claus, Marcus Wyss, Dirk Schüler +2
Many bacteria share the fascinating ability to sense Earth's magnetic field -- a process known as magnetotaxis. These bacteria synthesize magnetic nanoparticles, called magnetosome…
Nanoscale magnetism and magnetic phase transitions in atomically thin CrSBr
Märta A. Tschudin, David A. Broadway, Patrick Reiser +13
Since their first observation in 2017, atomically thin van der Waals (vdW) magnets have attracted significant fundamental, and application-driven attention. However, their low orde…
Coupling trapped ions to a nanomechanical oscillator
Moritz Weegen, Martino Poggio, Stefan Willitsch
Cold ions in traps are well-established, highly controllable quantum systems with a wide variety of applications in quantum information, precision spectroscopy, clocks and chemistr…
Electron-beam lithography of nanostructures at the tips of scanning probe cantilevers
Luca Forrer, Aurèle Kamber, Armin Knoll +2
We developed a process to fabricate nanoscale metallic gate electrodes on scanning probe cantilevers, including on the irregular surface of protruding cantilever tips. The process…
Magnetic anisotropy of individual maghemite mesocrystals
B. Gross, S. Philipp, E. Josten +4
Interest in creating magnetic metamaterials has led to methods for growing superstructures of magnetic nanoparticles. Mesoscopic crystals of maghemite () n…
Force-detected Nuclear Magnetic Resonance
M. Poggio, B. E. Herzog
The drive to improve the sensitivity of nuclear magnetic resonance (NMR) to smaller and smaller sample volumes has led to the development of a variety of techniques distinct from c…
Nonlinear motion and mechanical mixing in as-grown GaAs nanowires
F. R. Braakman, D. Cadeddu, G. Tütüncüoglu +4
We report nonlinear behavior in the motion of driven nanowire cantilevers. The nonlinearity can be described by the Duffing equation and is used to demonstrate mechanical mixing of…
Vortex Lattice Melting of a NbSe2 single grain probed by Ultrasensitive Cantilever Magnetometry
L. Bossoni, P. Carretta, M. Poggio
Using dynamic cantilever magnetometry, we study the vortex lattice and its corresponding melting transition in a micrometer-size crystallite of superconducting NbSe2. Measurements…
Measurement of statistical nuclear spin polarization in a nanoscale GaAs sample
Fei Xue, D. P. Weber, P. Peddibhotla +1
We measure the statistical polarization of quadrupolar nuclear spins in a sub-micrometer (0.6 um^3) particle of GaAs using magnetic resonance force microscopy. The crystalline samp…
A geometry for optimizing nanoscale magnetic resonance force microscopy
Fei Xue, P. Peddibhotla, M. Montinaro +2
We implement magnetic resonance force microscopy (MRFM) in an experimental geometry, where the long axis of the cantilever is normal to both the external magnetic field and the RF…