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View article: Structural properties and recrystallization effects in ion beam modified B20-type FeGe films
Structural properties and recrystallization effects in ion beam modified B20-type FeGe films Open
Disordered iron germanium (FeGe) has recently garnered interest as a testbed for a variety of magnetic phenomena as well as for use in magnetic memory and logic applications. This is partially owing to its ability to host skyrmions and ant…
View article: Structural Properties and Recrystallization Effects in Ion Beam Modified B20-type FeGe Films
Structural Properties and Recrystallization Effects in Ion Beam Modified B20-type FeGe Films Open
Disordered iron germanium (FeGe) has recently garnered interest as a testbed for a variety of magnetic phenomena as well as for use in magnetic memory and logic applications. This is partially owing to its ability to host skyrmions and ant…
View article: Inducing a Tunable Skyrmion-Antiskyrmion System through Ion Beam Modification of FeGe Films
Inducing a Tunable Skyrmion-Antiskyrmion System through Ion Beam Modification of FeGe Films Open
Skyrmions and antiskyrmions are nanoscale swirling textures of magnetic moments formed by chiral interactions between atomic spins in magnetic non-centrosymmetric materials and multilayer films with broken inversion symmetry. These quasipa…
View article: Structural and Optoelectronic Properties of Thin Film LaWN$_3$
Structural and Optoelectronic Properties of Thin Film LaWN$_3$ Open
Nitride perovskites are an emerging class of materials that have been predicted to display a range of interesting physics and functional properties, but they are under-explored due to the difficulty of synthesizing oxygen-free nitrides. La…
View article: Spectroscopic Investigation of Shallow Hole Traps in Ga- and B-doped Czochralski Silicon: Insight into Light-Induced Degradation
Spectroscopic Investigation of Shallow Hole Traps in Ga- and B-doped Czochralski Silicon: Insight into Light-Induced Degradation Open
We report the minority carrier lifetime in B-doped Czochralski (Cz) Si declines upon carrier injection due to light-induced degradation (LID), which is attributed to the formation of a recombination-active boron-oxygen complex. Ga-doped Cz…
View article: High-Throughput Selection and Experimental Realization of Two New Ce-Based Nitride Perovskites: CeMoN<sub>3</sub> and CeWN<sub>3</sub>
High-Throughput Selection and Experimental Realization of Two New Ce-Based Nitride Perovskites: CeMoN<sub>3</sub> and CeWN<sub>3</sub> Open
Nitride perovskites have only been experimentally realized in very few cases despite the widespread existence and commercial importance of perovskite materials. From oxide perovskites used in ultrasonics to halide perovskites that have rev…
View article: Plastic vortex creep and dimensional crossovers in the highly anisotropic superconductor HgBa$_2$CuO$_{4+x}$
Plastic vortex creep and dimensional crossovers in the highly anisotropic superconductor HgBa$_2$CuO$_{4+x}$ Open
In type-II superconductors exposed to magnetic fields between upper and lower critical values, $H_{c1}$ and $H_{c2}$, penetrating magnetic flux forms a lattice of vortices whose motion can induce dissipation. Consequently, the magnetizatio…
View article: Designing high-performance superconductors with nanoparticle inclusions: Comparisons to strong pinning theory
Designing high-performance superconductors with nanoparticle inclusions: Comparisons to strong pinning theory Open
One of the most promising routes for achieving high critical currents in superconductors is to incorporate dispersed, non-superconducting nanoparticles to control the dissipative motion of vortices. However, these inclusions reduce the ove…
View article: Challenges and transformative opportunities in superconductor vortex physics
Challenges and transformative opportunities in superconductor vortex physics Open
In superconductors, the motion of vortices introduces unwanted dissipation that is disruptive to applications. Fortunately, material defects can immobilize vortices, acting as vortex pinning centers, which engenders dramatic improvements i…
View article: Designing high-performance superconductors with nanoparticle inclusions:\n comparisons to strong pinning theory
Designing high-performance superconductors with nanoparticle inclusions:\n comparisons to strong pinning theory Open
One of the most promising routes for achieving unprecedentedly high critical\ncurrents in superconductors is to incorporate dispersed, non-superconducting\nnanoparticles to control the dissipative motion of vortices. However, these\ninclus…
View article: Observation of anti-damping spin-orbit torques generated by in-plane and out-of-plane spin polarizations in MnPd3
Observation of anti-damping spin-orbit torques generated by in-plane and out-of-plane spin polarizations in MnPd3 Open
High spin-orbit torques (SOTs) generated by topological materials and heavy metals interfaced with a ferromagnetic layer show promise for next generation magnetic memory and logic devices. SOTs generated from the in-plane spin polarization…
View article: Atomic structure of light-induced efficiency-degrading defects in boron-doped Czochralski silicon solar cells
Atomic structure of light-induced efficiency-degrading defects in boron-doped Czochralski silicon solar cells Open
Using electron paramagnetic resonance, we show that under light exposure, nearly all the 10 16 boron doping sites in Si degrade to form shallow traps. Of these 10 16 traps, only 10 12 –10 13 cm −3 are spin-active and responsible for light-…
View article: Observation of anti-damping spin-orbit torques generated by in-plane and out-of-plane spin polarizations in MnPd3
Observation of anti-damping spin-orbit torques generated by in-plane and out-of-plane spin polarizations in MnPd3 Open
High spin-orbit torques (SOTs) generated by topological materials and heavy metals interfaced with a ferromagnetic layer show promise for next generation magnetic memory and logic devices. SOTs generated from the in-plane spin polarization…
View article: Large enhancement of the in-field critical current density of YBCO coated conductors due to composite pinning landscape
Large enhancement of the in-field critical current density of YBCO coated conductors due to composite pinning landscape Open
YBa 2 Cu 3 O 7 -based coated conductors (CCs) achieve the highest critical current densities ( J c ) of any known superconductor and are a key technology for applications such as rotatory machines, high-field magnets and power transmission…
View article: Creation of nanoscale magnetic fields using nano-magnet arrays
Creation of nanoscale magnetic fields using nano-magnet arrays Open
We present the fabrication of nano-magnet arrays, comprised of two sets of interleaving SmCo5 and Co nano-magnets, and the subsequent development and implementation of a protocol to program the array to create a one-dimensional rotating ma…
View article: Universal Lower Limit on Vortex Creep in Superconductors
Universal Lower Limit on Vortex Creep in Superconductors Open
Superconductors are excellent testbeds for studying vortices, topological excitations that also appear in superfluids, liquid crystals, and Bose-Einstein condensates. Vortex motion can be disruptive; it can cause phase transitions, glitche…
View article: History-dependent dissipative vortex dynamics in superconducting arrays
History-dependent dissipative vortex dynamics in superconducting arrays Open
In this study, we perform current (I)-voltage (V) measurements on low resistance superconductor-normal-superconductor arrays in finite magnetic fields, focusing on the dilute vortex population regime. We observe significant deviations from…
View article: Irradiation Induced Defects in YBa2Cu3O 7-δ Coated Conductors
Irradiation Induced Defects in YBa2Cu3O 7-δ Coated Conductors Open
Journal Article Irradiation Induced Defects in YBa2Cu3O 7- δ Coated Conductors Get access Huaping Sheng, Huaping Sheng Center for Nanoscale Materials, Argonne National Laboratory, Argonne, IL Search for other works by this author on: Oxfor…
View article: Engineered Pinning Landscapes for Enhanced 2G Coil Wire
Engineered Pinning Landscapes for Enhanced 2G Coil Wire Open
We demonstrate a twofold increase in the in-field critical current of AMSC's standard 2G coil wire by irradiation with 18-MeV Au ions. The optimum pinning enhancement is achieved with a dose of 6 × 1011 Au ions/cm2. Although the 77 K, self…