Katharina Ollefs
Katharina Ollefs
Dirección de correo verificada de uni-due.de
TítuloCitado porAño
Absence of Intrinsic Ferromagnetic Interactions of Isolated and Paired Co Dopant Atoms in with High Structural Perfection
A Ney, K Ollefs, S Ye, T Kammermeier, V Ney, TC Kaspar, SA Chambers, ...
Physical review letters 100 (15), 157201, 2008
2432008
Advanced spectroscopic synchrotron techniques to unravel the intrinsic properties of dilute magnetic oxides: the case of Co: ZnO
A Ney, M Opel, TC Kaspar, V Ney, S Ye, K Ollefs, T Kammermeier, ...
New journal of physics 12 (1), 013020, 2010
1102010
High-resolution X-ray lensless imaging by differential holographic encoding
D Zhu, M Guizar-Sicairos, B Wu, A Scherz, Y Acremann, T Tyliszczak, ...
Physical review letters 105 (4), 043901, 2010
832010
Limitations of measuring small magnetic signals of samples deposited on a diamagnetic substrate
A Ney, T Kammermeier, V Ney, K Ollefs, S Ye
Journal of Magnetism and Magnetic Materials 320 (23), 3341-3346, 2008
702008
Spin pumping damping and magnetic proximity effect in Pd and Pt spin-sink layers
M Caminale, A Ghosh, S Auffret, U Ebels, K Ollefs, F Wilhelm, A Rogalev, ...
Physical Review B 94 (1), 014414, 2016
602016
Spin pumping damping and magnetic proximity effect in Pd and Pt spin-sink layers
M Caminale, A Ghosh, S Auffret, U Ebels, K Ollefs, F Wilhelm, A Rogalev, ...
Physical Review B 94 (1), 014414, 2016
582016
Anisotropic paramagnetism of Co-doped ZnO epitaxial films
A Ney, T Kammermeier, K Ollefs, S Ye, V Ney, TC Kaspar, SA Chambers, ...
Physical Review B 81 (5), 054420, 2010
532010
Element-specific magnetic hysteresis of individual 18 nm Fe nanocubes
F Kronast, N Friedenberger, K Ollefs, S Gliga, L Tati-Bismaths, R Thies, ...
Nano letters 11 (4), 1710-1715, 2011
522011
Magnetism of Co doped ZnO with Al codoping: Carrier-induced mechanisms versus extrinsic origins
A Ney, V Ney, S Ye, K Ollefs, T Kammermeier, TC Kaspar, SA Chambers, ...
Physical Review B 82 (4), 041202, 2010
452010
Spin Hall magnetoresistance in a canted ferrimagnet
K Ganzhorn, J Barker, R Schlitz, BA Piot, K Ollefs, F Guillou, F Wilhelm, ...
Physical Review B 94 (9), 094401, 2016
432016
Element specific magnetic properties of Gd-doped GaN: Very small polarization of Ga and paramagnetism of Gd
A Ney, T Kammermeier, V Ney, S Ye, K Ollefs, E Manuel, S Dhar, ...
Physical Review B 77 (23), 233308, 2008
372008
Structural, chemical and magnetic properties of secondary phases in Co-doped ZnO
A Ney, A Kovács, V Ney, S Ye, K Ollefs, T Kammermeier, F Wilhelm, ...
New Journal of Physics 13 (10), 103001, 2011
362011
Structural and magnetic analysis of epitaxial films of Gd-doped ZnO
V Ney, S Ye, T Kammermeier, K Ollefs, F Wilhelm, A Rogalev, S Lebegue, ...
Physical Review B 85 (23), 235203, 2012
282012
Gd-doped GaN studied with element specificity: Very small polarization of Ga, paramagnetism of Gd and the formation of magnetic clusters
A Ney, T Kammermeier, K Ollefs, V Ney, S Ye, S Dhar, KH Ploog, M Röver, ...
Journal of Magnetism and Magnetic Materials 322 (9-12), 1162-1166, 2010
232010
Absence of ferromagnetic-transport signatures in epitaxial paramagnetic and superparamagnetic films
S Ye, V Ney, T Kammermeier, K Ollefs, S Zhou, H Schmidt, F Wilhelm, ...
Physical Review B 80 (24), 245321, 2009
232009
Absence of magnetic proximity effects in magnetoresistive hybrid interfaces
M Valvidares, N Dix, M Isasa, K Ollefs, F Wilhelm, A Rogalev, F Sánchez, ...
Physical Review B 93 (21), 214415, 2016
202016
Iridates from the molecular side
KS Pedersen, J Bendix, A Tressaud, E Durand, H Weihe, Z Salman, ...
Nature communications 7, 12195, 2016
192016
Coalescence-driven magnetic order of the uncompensated antiferromagnetic Co doped ZnO
V Ney, B Henne, J Lumetzberger, F Wilhelm, K Ollefs, A Rogalev, ...
Physical Review B 94 (22), 224405, 2016
162016
Magnetic interactions in the Zn-Co-O system: tuning local structure, valence and carrier type from extremely Co doped ZnO to ZnCo2O4
B Henne, V Ney, K Ollefs, F Wilhelm, A Rogalev, A Ney
Scientific reports 5, 16863, 2015
162015
Microwave soft x-ray microscopy for nanoscale magnetization dynamics in the 5–10 GHz frequency range
S Bonetti, R Kukreja, Z Chen, D Spoddig, K Ollefs, C Schöppner, ...
Review of Scientific Instruments 86 (9), 093703, 2015
162015
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Artículos 1–20