Jordan Chess
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View article: Discretized evolution of solitons in the achiral stripe phase of a Fe/Gd thin film
Discretized evolution of solitons in the achiral stripe phase of a Fe/Gd thin film Open
Understanding magnetic phase transitions from stripe to skyrmion textures provide fundamental scientific insights into the details of the intermediate topologies through which the system evolves. The solitonic nature of spin texture in bot…
View article: Interpretable and Efficient Interferometric Contrast in Scanning Transmission Electron Microscopy with a Diffraction-Grating Beam Splitter
Interpretable and Efficient Interferometric Contrast in Scanning Transmission Electron Microscopy with a Diffraction-Grating Beam Splitter Open
Efficient imaging of biomolecules, 2D materials and electromagnetic fields depends on retrieval of the phase of transmitted electrons. We demonstrate a method to measure phase in a scanning transmission electron microscope using a nanofabr…
View article: Probing Light Atoms at Subnanometer Resolution: Realization of Scanning Transmission Electron Microscope Holography
Probing Light Atoms at Subnanometer Resolution: Realization of Scanning Transmission Electron Microscope Holography Open
Atomic resolution imaging of light elements in electron-transparent materials has long been a challenge. Biomolecular materials, for example, are rapidly altered by incident electrons. We demonstrate a scanning transmission electron micros…
View article: Holographically Probing Longitudinal Magnetic Fields with Electron Vortex Beams
Holographically Probing Longitudinal Magnetic Fields with Electron Vortex Beams Open
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View article: ZnO nanoparticle preparation route influences surface reactivity, dissolution and cytotoxicity
ZnO nanoparticle preparation route influences surface reactivity, dissolution and cytotoxicity Open
The nZnO synthesis approach results in unique surface chemistries which influence agglomeration tendencies, dissolution potential, oxidative stress responses and NP-induced toxicity.
View article: Resonant properties of dipole skyrmions in amorphous Fe/Gd multilayers
Resonant properties of dipole skyrmions in amorphous Fe/Gd multilayers Open
The dynamic response of dipole skyrmions in Fe/Gd multilayer films is\ninvestigated by ferromagnetic resonance measurements and compared to\nmicromagnetic simulations. We detail thickness and temperature dependent\nstudies of the observed …
View article: Determination of domain wall chirality using <i>in situ</i> Lorentz transmission electron microscopy
Determination of domain wall chirality using <i>in situ</i> Lorentz transmission electron microscopy Open
Controlling domain wall chirality is increasingly seen in non-centrosymmetric materials. Mapping chiral magnetic domains requires knowledge about all the vector components of the magnetization, which poses a problem for conventional Lorent…
View article: Resonant properties of dipole skyrmions
Resonant properties of dipole skyrmions Open
The dynamic response of dipole skyrmions in Fe/Gd multilayer films is investigated by ferromagnetic resonance measurements and compared to micromagnetic simulations. We detail thickness and temperature dependent studies on the observed mod…
View article: Tailoring magnetic energies to form dipole skyrmions and skyrmion lattices
Tailoring magnetic energies to form dipole skyrmions and skyrmion lattices Open
The interesting physics and potential memory technologies resulting from topologically protected spin textures such as skyrmions have prompted efforts to discover new material systems that can host these kinds of magnetic structures. Here,…
View article: Synthesizing skyrmion bound pairs in Fe-Gd thin films
Synthesizing skyrmion bound pairs in Fe-Gd thin films Open
We show that properly engineered amorphous Fe-Gd alloy thin films with perpendicular magnetic anisotropy exhibit bound pairs of like-polarity, opposite helicity skyrmions at room temperature. Magnetic mirror symmetry planes present in the …
View article: Phase Contrast Imaging of Weakly-Scattering Samples with Matched Illumination and Detector Interferometry–Scanning Transmission Electron Microscopy (MIDI–STEM)
Phase Contrast Imaging of Weakly-Scattering Samples with Matched Illumination and Detector Interferometry–Scanning Transmission Electron Microscopy (MIDI–STEM) Open
Journal Article Phase Contrast Imaging of Weakly-Scattering Samples with Matched Illumination and Detector Interferometry–Scanning Transmission Electron Microscopy (MIDI–STEM) Get access Colin Ophus, Colin Ophus National Center for Electro…
View article: Development of STEM-Holography
Development of STEM-Holography Open
We have developed a new technique we call STEM-holography, inspired by
View article: Synthesizing Skyrmion Molecules in Fe-Gd Thin Films
Synthesizing Skyrmion Molecules in Fe-Gd Thin Films Open
We show that properly engineered amorphous Fe-Gd alloy thin films with perpendicular magnetic anisotropy exhibit room-temperature skyrmion molecules, or a pair of like-polarity, opposite-helicity skyrmions. Magnetic mirror symmetry planes …
View article: Observation of Skyrmions at Room-temperature in Amorphous Fe/Gd Films
Observation of Skyrmions at Room-temperature in Amorphous Fe/Gd Films Open
Journal Article Observation of Skyrmions at Room-temperature in Amorphous Fe/Gd Films Get access Jordan Chess, Jordan Chess Department of Physics, University of Oregon, Eugene Search for other works by this author on: Oxford Academic Googl…
View article: Demonstration of electron helical dichroism as a local probe of chirality
Demonstration of electron helical dichroism as a local probe of chirality Open
We report observation of electron helical dichroism on a material with chiral structure. In analogy with circular dichroism, a common technique for molecular structural fingerprinting, we use a nanofabricated forked diffraction grating to …