Absence of Intrinsic Ferromagnetic Interactions of Isolated and Paired Co Dopant Atoms <?format ?>in A Ney, K Ollefs, S Ye, T Kammermeier, V Ney, TC Kaspar, SA Chambers, ...
Physical Review Letters 100 (15), 157201, 2008
272 2008 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
156 2016 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
121 2010 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
114 2016 Hysteresis design of magnetocaloric materials—from basic mechanisms to applications F Scheibel, T Gottschall, A Taubel, M Fries, KP Skokov, A Terwey, ...
Energy Technology 6 (8), 1397-1428, 2018
112 2018 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
106 2010 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
94 2008 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
85 2011 Magnetic properties of rare-earth and transition metal based perovskite type high entropy oxides R Witte, A Sarkar, L Velasco, R Kruk, RA Brand, B Eggert, K Ollefs, ...
Journal of Applied Physics 127 (18), 2020
78 2020 Role of intermediate 4f states in tuning the band structure of high entropy oxides A Sarkar, B Eggert, L Velasco, X Mu, J Lill, K Ollefs, SS Bhattacharya, ...
APL materials 8 (5), 2020
69 2020 Comprehensive investigation of crystallographic, spin-electronic and magnetic structure of (Co0. 2Cr0. 2Fe0. 2Mn0. 2Ni0. 2) 3O4: Unraveling the suppression of configuration … A Sarkar, B Eggert, R Witte, J Lill, L Velasco, Q Wang, J Sonar, K Ollefs, ...
Acta materialia 226, 117581, 2022
67 2022 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—Condensed Matter and Materials Physics 81 (5), 054420, 2010
61 2010 Iridates from the molecular side KS Pedersen, J Bendix, A Tressaud, E Durand, H Weihe, Z Salman, ...
Nature communications 7 (1), 12195, 2016
59 2016 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), 2015
59 2015 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
52 2011 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—Condensed Matter and Materials Physics 82 (4), 041202, 2010
50 2010 Absence of magnetic proximity effects in magnetoresistive M Valvidares, N Dix, M Isasa, K Ollefs, F Wilhelm, A Rogalev, F Sánchez, ...
Physical Review B 93 (21), 214415, 2016
49 2016 A full gap above the Fermi level: the charge density wave of monolayer VS2 C Van Efferen, J Berges, J Hall, E Van Loon, S Kraus, A Schobert, ...
Nature Communications 12 (1), 6837, 2021
47 2021 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—Condensed Matter and Materials Physics 85 (23), 235203, 2012
46 2012 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—Condensed Matter and Materials Physics 77 (23), 233308, 2008
41 2008 
Heiko WendeProfessor, Faculty of Physics, University of Duisburg-EssenPreverjeni e-poštni naslov na uni-due.de