49 citations · 202 across the 17 of their papers we have counts for
18 papers
Defect analysis of the - to -GaO phase transition
Umutcan Bektas, Maciej O. Liedke, Huan Liu +7
In this study, we investigate the ion-irradiation-induced phase transition in gallium oxide (Ga2O3) from the to the phase, the role of defects during the transformation, an…
Ge epitaxy at ultra-low growth temperatures enabled by a pristine growth environment
Christoph Wilflingseder, Johannes Aberl, Enrique Prado Navarette +11
Germanium (Ge), the next-in-line group-IV material, bears great potential to add functionality and performance to next-generation nanoelectronics and solid-state quantum transport…
Spatially-resolved charge detectors for particle beam optimization with femtoampere resolution achieved by in-vacuum signal preamplification
Kilian Brenner, Michael Zimmermann, Maik Butterling +3
We present the design of a Faraday cup-like charged particle detector in a four quadrant configuration aimed at facilitating the alignment of low-intensity beams of exotic particle…
Insights into the LiMn2O4 Cathode Stability in Aqueous Electrolyte
Juan Carlos Gonzalez-Rosillo, Maxim Guc, Maciej Oskar Liedke +8
LiMn2O4 (LMO), cathodes present large stability when cycled in aqueous electrolytes, contrasting its behavior in conventional organic electrolytes in Lithium-ion batteries (LIBs).…
Ion Intercalation in Lanthanum Strontium Ferrite for Aqueous Electrochemical Energy Storage Devices
Yunqing Tang, Francesco Chiabrera, Alex Morata +10
Ion intercalation of perovskite oxides in liquid electrolytes is a very promising method for controlling their functional properties while storing charge, which opens the potential…
Detection of light emission produced in the process of positronium formation
M. Pietrow, R. Zaleski, A. Wagner +6
The excess energy emitted during the positronium (Ps) formation in condensed matter may be released as light. Spectroscopic analysis of this light can be a new method of studying t…
Dissolution of donor-vacancy clusters in heavily doped n-type germanium
Slawomir Prucnal, Maciej O. Liedke, Xiaoshuang Wang +17
The n-type doping of Ge is a self-limiting process due to the formation of vacancy-donor complexes (DnV with n <= 4) that deactivate the donors. This work unambiguously demonstrate…
Mapping the Structure of Oxygen-Doped Wurtzite Aluminum Nitride Coatings From Ab Initio Random Structure Search and Experiments
Piero Gasparotto, Maria Fischer, Daniele Scopece +8
Machine learning is changing how we design and interpret experiments in materials science. In this work, we show how unsupervised learning, combined with ab initio modeling, improv…
Vacancy-Hydrogen Interaction in Niobium during Low-Temperature Baking
Marc Wenskat, Jakub Cizek, Maciej Oskar Liedke +6
A recently discovered modified low-temperature baking leads to reduced surface losses and an increase of the accelerating gradient of superconducting TESLA shape cavities. We will…
Nitrogen magneto-ionics
Julius de Rojas, Alberto Quintana, Aitor Lopeandía +15
So far, magneto-ionics, understood as voltage-driven ion transport in magnetic materials, has largely relied on controlled migration of oxygen ion/vacancy and, to a lesser extent,…
Light-driven permanent transition from insulator to conductor in Ga2O3
F. A. Selim, D. Rana, S. Agarwal +9
The transition from insulator to conductor can be achieved in some materials but requires modification of both the arrangement of atoms and their electronic configurations. This is…
Boosting room temperature magneto-ionics in Co3O4
Julius de Rojas, Alberto Quintana, Aitor Lopeandía +11
Voltage control of magnetism through electric field-induced oxygen motion (magneto-ionics) could represent a significant breakthrough in the pursuit for new strategies to enhance e…
Magnetic response of FeRh to static and dynamic disorder
Benedikt Eggert, Alexander Schmeink, Johanna Lill +10
Changes of the magnetic and crystal structure on the microscopic scale in 40 nm FeRh thin films have been applied to investigate the phenomena of a disorder induced ferromagnetism…
Chemical manipulation of hydrogen induced high p-type and n-type conductivity in Ga2O3
Md Minhazul Islam, Maciej Oskar Liedke, David Winarski +6
Advancement of optoelectronic and high-power devices is tied to the development of wide band gap materials with excellent transport properties. However, bipolar doping (n-type and…
Vacancy complexes in nonequilibrium germanium-tin semiconductors
Simone Assali, Mohamed Elsayed, Jérôme Nicolas +5
Understanding the nature and behavior of vacancy-like defects in epitaxial GeSn metastable alloys is crucial to elucidate the structural and optoelectronic properties of these emer…
Positron spectroscopy of point defects in the skyrmion-lattice compound MnSi
Markus Reiner, Andreas Bauer, Michael Leitner +7
Outstanding crystalline perfection is a key requirement for the formation of new forms of electronic order in a vast number of widely different materials. Whereas excellent sample…
Nuclear deformation and neutron excess as competing effects for pygmy dipole strength
R. Massarczyk, R. Schwengner, F. Dönau +27
The electromagnetic dipole strength below the neutron-separation energy has been studied for the xenon isotopes with mass numbers A = 124, 128, 132, and 134 in nuclear resonance fl…
The evidence of quasi-free positronium state in GiPS-AMOC spectra of glycerol
D. Zvezhinskiy, M. Butterling, A. Wagner +2
We present the results of processing of Age-Momentum Correlation (AMOC) spectra that were measured for glycerol by the Gamma-induced positron spectroscopy (GiPS) facility. Our rese…