Daniel Rosenmann
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View article: Synthesis and transport properties of epitaxial Bi (111) films on GaAs (111) substrates
Synthesis and transport properties of epitaxial Bi (111) films on GaAs (111) substrates Open
In recent decades, the growth of ultrathin epitaxial bismuth (Bi) films on various substrates has garnered interest due to their unique electronic properties. We report upon the growth and electrical transport properties of epitaxial Bi (1…
View article: Cryogenic hybrid magnonic circuits based on spalled YIG thin films
Cryogenic hybrid magnonic circuits based on spalled YIG thin films Open
Yttrium iron garnet (YIG) magnonics has garnered significant research interest because of the unique properties of magnons (quasiparticles of collective spin excitation) for signal processing. In particular, hybrid systems based on YIG mag…
View article: Percolative phase transition in few-layered MoSe<sub>2</sub> field-effect transistors using Co and Cr contacts
Percolative phase transition in few-layered MoSe<sub>2</sub> field-effect transistors using Co and Cr contacts Open
The metal-to-insulator phase transition in 2D materials has revealed interesting electronic behavior and the need for a deeper understanding of electronic transport processes while attracting interest in developing next-generation electron…
View article: Cryogenic hybrid magnonic circuits based on spalled YIG thin films
Cryogenic hybrid magnonic circuits based on spalled YIG thin films Open
Yttrium iron garnet (YIG) magnonics has garnered significant research interest because of the unique properties of magnons (quasiparticles of collective spin excitation) for signal processing. In particular, hybrid systems based on YIG mag…
View article: X-ray Spectroscopy of a Rare-Earth Molecular System Measured at the Single Atom Limit at Room Temperature
X-ray Spectroscopy of a Rare-Earth Molecular System Measured at the Single Atom Limit at Room Temperature Open
We investigate the limit of X-ray detection at room temperature on rare-earth molecular films using lanthanum and a pyridine-based dicarboxamide organic linker as a model system. Synchrotron X-ray scanning tunneling microscopy is used to p…
View article: X-ray Spectroscopy of a Rare-Earth Molecular System Measured at the Single Atom Limit in Room Temperature
X-ray Spectroscopy of a Rare-Earth Molecular System Measured at the Single Atom Limit in Room Temperature Open
We investigate the limit of X-ray detection at room temperature on rare-earth molecular films using lanthanum and a pyridine-based dicarboxamide organic linker as a model system. Synchrotron X-ray scanning tunneling microscopy is used to p…
View article: CCDC 2184524: Experimental Crystal Structure Determination
CCDC 2184524: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2184523: Experimental Crystal Structure Determination
CCDC 2184523: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Simultaneous topographic and elemental chemical and magnetic contrast in scanning tunneling microscopy
Simultaneous topographic and elemental chemical and magnetic contrast in scanning tunneling microscopy Open
A method and system for performing simultaneous topographic and elemental chemical and magnetic contrast analysis in a scanning, tunneling microscope. The method and system also includes nanofabricated coaxial multilayer tips with a nanosc…
View article: A universal metasurface transfer technique for heterogeneous integration
A universal metasurface transfer technique for heterogeneous integration Open
Metasurfaces offer a versatile platform for engineering the wavefront of light using nanostructures with subwavelength dimensions and hold great promise for dramatically miniaturizing conventional optical elements due to their small footpr…
View article: Insulator-to-metal phase transition in a few-layered MoSe<sub>2</sub> field effect transistor
Insulator-to-metal phase transition in a few-layered MoSe<sub>2</sub> field effect transistor Open
We report an insulator-to-metal phase transition in a few-layer MoSe 2 field-effect transistor. The conductivity (shown in figure) becomes metallic at a critical carrier density of 1.2 x 10 12 cm -2 and is analyzed using percolation theory.
View article: Dual-band selective circular dichroism in mid-infrared chiral metasurfaces
Dual-band selective circular dichroism in mid-infrared chiral metasurfaces Open
Most chiral metamaterials and metasurfaces are designed to operate in a single wavelength band and with a certain circular dichroism (CD) value. Here, mid-infrared chiral metasurface absorbers with selective CD in dual-wavelength bands are…
View article: Impact of Transition Metal Doping on the Structural and Optical Properties of Halide Perovskites
Impact of Transition Metal Doping on the Structural and Optical Properties of Halide Perovskites Open
Metal ion doping into halide perovskite materials is a promising approach to enhance long-term film stability and improve solar cell performance. Moreover, the idea of doping metals into halide perovskites is also driven by applications in…
View article: Signatures of Coherent Phonon Transport in Ultralow Thermal Conductivity Two-Dimensional Ruddlesden–Popper Phase Perovskites
Signatures of Coherent Phonon Transport in Ultralow Thermal Conductivity Two-Dimensional Ruddlesden–Popper Phase Perovskites Open
An emerging class of methylammonium lead iodide (MAPbI3)-based Ruddlesden-Popper (RP) phase perovskites, BA2MAn-1PbnI3n+1 (n = 1-7), exhibit enhanced stability to environmental conditions relative to MAPbI3, yet still degrade at elevated t…
View article: Nanoporous Dielectric Resistive Memories Using Sequential Infiltration Synthesis
Nanoporous Dielectric Resistive Memories Using Sequential Infiltration Synthesis Open
Resistance switching in metal-insulator-metal structures has been extensively studied in recent years for use as synaptic elements for neuromorphic computing and as nonvolatile memory elements. However, high switching power requirements, d…
View article: Photogating-driven enhanced responsivity in a few-layered ReSe<sub>2</sub> phototransistor
Photogating-driven enhanced responsivity in a few-layered ReSe<sub>2</sub> phototransistor Open
The paper presents a thorough investigation of photoconductive properties of few layers of rhenium diselenide (ReSe 2 ). A correlation between responsivity ( R ) and power exponent ( γ ) indicates localized trap states plays a crucial role…
View article: Asymmetric crossing of the attractive and repulsive magnetic potential by Abrikosov vortices
Asymmetric crossing of the attractive and repulsive magnetic potential by Abrikosov vortices Open
Here, we present studies of Abrikosov vortex motion across the magnetically charged edges of long thin ferromagnetic stripes placed above or under a thin superconducting film. The magnetic charges at the stripe edges form attractive or rep…
View article: Au-free low-temperature ohmic contacts for AlGaN/AlN/GaN heterostructures
Au-free low-temperature ohmic contacts for AlGaN/AlN/GaN heterostructures Open
Au-free, Ti/Al/Ta ohmic contact on the AlGaN/AlN/GaN heterostructure using low annealing temperature is studied in this paper. With SiCl4 plasma treatment at the recess-etched contact region, a low contact resistance of 0.52 Ω mm and a low…
View article: Chiral plasmonic metasurface absorbers in the mid-infrared wavelength range
Chiral plasmonic metasurface absorbers in the mid-infrared wavelength range Open
Chiral metamaterials in the mid-infrared wavelength range have tremendous potential for studying thermal emission manipulation and molecular vibration sensing. Here, we present one type of chiral plasmonic metasurface absorber with high ci…
View article: A variable X-ray chopper system for phase-sensitive detection in synchrotron X-ray scanning tunneling microscopy
A variable X-ray chopper system for phase-sensitive detection in synchrotron X-ray scanning tunneling microscopy Open
An ultra-high-vacuum compatible X-ray chopper system has been designed, constructed and integrated into the XTIP beamline at the Advanced Photon Source at Argonne National Laboratory. The XTIP beamline can operate at soft X-ray energies fr…
View article: Plasmon-phonon coupling between mid-infrared chiral metasurfaces and molecular vibrations
Plasmon-phonon coupling between mid-infrared chiral metasurfaces and molecular vibrations Open
Plasmon-phonon coupling between metamaterials and molecular vibrations provides a new path for studying mid-infrared light-matter interactions and molecular detection. So far, the coupling between the plasmonic resonances of metamaterials …
View article: XTIP – the world's first beamline dedicated to the synchrotron X-ray scanning tunneling microscopy technique
XTIP – the world's first beamline dedicated to the synchrotron X-ray scanning tunneling microscopy technique Open
In recent years, there have been numerous efforts worldwide to develop the synchrotron X-ray scanning tunneling microscopy (SX-STM) technique. Here, the inauguration of XTIP, the world's first beamline fully dedicated to SX-STM, is reporte…
View article: Broadband infrared circular dichroism in chiral metasurface absorbers
Broadband infrared circular dichroism in chiral metasurface absorbers Open
Chirality is ubiquitous in nature and it is essential in many fields, but natural materials possess weak and narrow-band chiroptical effects. Here, chiral plasmonic metasurface absorbers are designed and demonstrated to achieve large broad…