Publications by authors named "C A Schlueter"

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In perovskite oxide heterostructures, bulk functional properties coexist with emergent physical phenomena at epitaxial interfaces. Notably, charge transfer at the interface between two insulating oxide layers can lead to the formation of a 2D electron gas (2DEG) with possible applications in, e.g.

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Article Synopsis
  • Proximity effects in thin ferromagnetic films enable unique adjustments in magnetic properties when they are in contact, influencing their magnetic interactions at the interface.
  • By studying combinations of low-rare-earth ferromagnets and 3d transition metals, researchers can achieve room-temperature magnetism, especially in materials like europium monoxide (EuO) without altering their core properties.
  • Hard X-ray photoelectron spectroscopy techniques reveal that the thickness of the EuO layer significantly impacts its magnetic coupling, demonstrating that this effect is a short-range phenomenon that enhances magnetic order, particularly in lower dimensions, making it valuable for spin-based technologies.
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Imaging energy filters in photoelectron microscopes and momentum microscopes use spherical fields with deflection angles of 90°, 180° and even 2 × 180°. These instruments are optimized for high energy resolution, and exhibit image aberrations when operated in high transmission mode at medium energy resolution. Here, a new approach is presented for bandpass-filtered imaging in real or reciprocal space using an electrostatic dodecapole with an asymmetric electrode array.

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The sol-gel reaction mechanism of 211 MAX phases has proven to be very complex when identifying the intermediate species, chemical processes, and conversions that occur from a mixture of metal salts and gelling agent into a crystalline ternary carbide. With mostly qualitative results in the literature (CrGaC, CrGeC, and VGeC), additional analytical techniques, including thermal analysis, powder diffraction, total scattering, and various spectroscopic methods, are necessary to unravel the identity of the chemical compounds and transformations during the reaction. Here, we demonstrate the combination of these techniques to understand the details of the sol-gel synthesis of MAX phase VPC.

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