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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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31 papers · 2 filters
Depth dependent magnetization profiles of hybrid exchange springs
T. N. Anh Nguyen, R. Knut, V. Fallahi +8
We report on the magnetization depth profile of a hybrid exchange spring system in which a Co/Pd multilayer with perpendicular anisotropy is coupled to a CoFeB thin film with in-pl…
The potential of Rutherford Backscattering Spectrometry for composition analysis of colloidal nanocrystals
Daniel Primetzhofer, Mikhailo Sytnyk, Paul Joachim Wagner +2
We investigate the potential of elastic scattering of energetic ions for compositional analysis of magnetic colloidal nanocrystals. Thin layers of nanocrystals deposited by spin co…
Designing Fe Nanostructures at Graphene/h-BN Interfaces
Soumyajyoti Haldar, Pooja Srivastava, Olle Eriksson +2
Tailor-made magnetic nanostructures offer a variety of functionalities useful for technological applications. In this work, we explore the possibilities of realizing Fe nanostructu…
Tunneling, Remanence, and Frustration in Dysprosium based Endohedral Single Molecule Magnets
Rasmus Westerström, Jan Dreiser, Cinthia Piamonteze +9
A single molecule magnet (SMM) can maintain its magnetization direction over a long period of time [1,2]. It consists in a low number of atoms that facilitates the understanding an…
Role of resonant inelastic x-ray scattering in high-resolution core-level spectroscopy of actinide materials
K. O. Kvashnina, S. M. Butorin
This paper provides a brief overview of applications of advanced X-ray spectroscopic techniques that take advantage of the resonant inelastic X-ray scattering (RIXS) in the hard an…
The chemical state of complex uranium oxides
K. O. Kvashnina, S. M. Butorin, P. Martin +1
We report here the first direct observation of U(V) in uranium binary oxides and analyze the gradual conversion of the U oxidation state in the mixed uranium systems. Our finding c…
Ultra-narrow and widely tunable Mn^(2+) Emission from Single Nanocrystals of ZnS-CdS alloy
Abhijit Hazarika, Arunasish Layek, Suman De +5
Extensively studied Mn-doped semiconductor nanocrystals have invariably exhibited photoluminescence (PL) over a narrow energy window of width <= 149 meV in the orange-red region an…
Chemical pressure effects on structural, dielectric and magnetic properties of solid solutions Mn3-xCoxTeO6
S. A. Ivanov, R. Mathieu, P. Nordblad +6
The effects of Co2+ doping on the structural, magnetic and dielectric properties of the multiferroic frustrated antiferromagnet Mn3TeO6 have been investigated. Ceramic samples of t…
Engineered spin-valve type magnetoresistance in FeO-CoFeO core-shell nanoparticles
P. Anil Kumar, Sugata Ray, S. Chakraverty +1
Naturally occurring spin-valve-type magnetoresistance (SVMR), recently observed in Sr2FeMoO6 samples, suggests the possibility of decoupling the maximal resistance from the coerciv…
Effect of "dipolar-biasing" on the tunability of tunneling magnetoresistance in transition metal oxide systems
P. Anil Kumar, D. D. Sarma
We observe an unusual tunneling magnetoresistance (TMR) phenomenon in a composite of LaSrMnO with CoFeO where the TMR versus applied magnetic fiel…
Magnetization in electron- and Mn- doped SrTiO3
D. Choudhury, B. Pal, A. Sharma +2
Mn-doped SrTiO_3.0, when synthesized free of impurities, is a paramagnetic insulator with interesting dielectric properties. Since delocalized charge carriers are known to promote…
Electronic properties of CoFeSi investigated by x-ray magnetic linear dichroism
Mirko Emmel, Alexey Alfonsov, Dominik Legut +11
We present experimental XMLD spectra measured on epitaxial (001)-oriented thin CoFeSi films, which are rich in features and depend sensitively on the degree of atomic order a…
Stabilizing a novel hexagonal Ru2C through Lifshitz transition under pressure
Weiwei Sun, Sudip Chakraborty, Rajeev Ahuja
A new type of heavy transition metal carbide (TMC), Ru2C with a space group of p3 - m1(164) was synthesized experimentally at high pressurehigh temperature [J Phys. Condens. Matter…
Tuning the Curie temperature of FeCo compounds by tetragonal distortion
A. Jakobsson, E. Sasioglu, Ph. Mavropoulos +4
Combining density-functional theory calculations with a classical Monte Carlo method, we show that for B2-type FeCo compounds tetragonal distortion gives rise to a strong reduction…
Ultra-thin film and interface analysis of high-k dielectric materials employing Time-Of-Flight Medium Energy Ion Scattering (TOF-MEIS)
Daniel Primetzhofer, Eugenio Dentoni Litta, Anders Hallén +2
We explore the potential of Time-Of-Flight Medium Energy Ion Scattering (TOFMEIS) for thin film analysis and analyze possible difficulties in evaluation of experimental spectra. Is…
Exchange parameters and adiabatic magnon energies from spin-spiral calculations
Adam Jacobsson, Biplab Sanyal, Marjana Lezaic +1
We present a method of extracting the exchange parameters of the classical Heisenberg model from first-principles calculations of spin-spiral total energies based on density functi…
A molecular mechanism for the water-hydroxyl balance during wetting of TiO2
M. Amft, L. E. Walle, D. Ragazzon +4
We show that the formation of the wetting layer and the experimentally observed continuous shift of the H2O-OH balance towards molecular water at increasing coverage on a TiO2(110)…
Thermally driven domain wall motion in Fe on W(1 1 0)
Jonathan Chico, Corina Etz, Lars Bergqvist +4
It has recently been shown that domain walls in ferromagnets can be moved in the presence of thermal gradients. In this work we study the motion of narrow domain walls in low-dimen…
Electronic stopping power of hydrogen in a high-k material at the stopping maximum and below
Daniel Primetzhofer
Electronic energy loss of hydrogen ions in HfO2 was investigated in a wide energy range in the medium and low energy ion scattering regime. Experiments by Time-Of-Flight Medium-Ene…
Electronic structure and magnetic properties of Mn, Co, and Ni-substitution of Fe in Fe4N
Patrizia Monachesi, Torbjörn Björkman, Thomas Gasche +1
The magnetic properties of Mn, Co and Ni substituted Fe4N are calculated from first principles theory. It is found that the generalized gradient approximation reproduces with good…
Magnetocrystalline Anisotropy and the Magnetocaloric Effect in Fe2P
L. Caron, M. Hudl, V. Höglin +6
Magnetic and magnetocaloric properties of high-purity, giant magnetocaloric polycrystalline and single-crystalline Fe2P are investigated. Fe2P displays a moderate magnetic entropy…
Quasi-resonant neutralization of He+ ions at a germanium surface
D. Goebl, D. Roth, D. Primetzhofer +4
When low-energy He ions are scattered from a Ge surface, the fraction of positive ions exhibits characteristic oscillations as a function of ion energy. These oscillations are caus…
Superconductivity in Topological Insulator Sb2Te3 Induced by Pressure
J. Zhu, J. L. Zhang, P. P. Kong +15
Topological superconductivity is one of most fascinating properties of topological quantum matters that was theoretically proposed and can support Majorana Fermions at the edge sta…
Magnetic coupling of porphyrin molecules through graphene
C. F. Hermanns, K. Tarafder, M. Bernien +4
Graphene is expected to complement todays Si-based information technology. In particular, magnetic molecules in contact with graphene constitute a tantalizing approach towards orga…