Bert Koopmans
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Explaining the paradoxical diversity of ultrafast laser-induced demagnetization
B Koopmans, G Malinowski, F Dalla Longa, D Steiauf, M Fähnle, T Roth, ...
Nature materials 9 (3), 259-265, 2010
Band gap, excitons, and Coulomb interaction in solid
RW Lof, MA van Veenendaal, B Koopmans, HT Jonkman, GA Sawatzky
Physical Review Letters 68 (26), 3924, 1992
Interface-induced phenomena in magnetism
F Hellman, A Hoffmann, Y Tserkovnyak, GSD Beach, EE Fullerton, ...
Reviews of modern physics 89 (2), 025006, 2017
Ultrafast magneto-optics in nickel: magnetism or optics?
B Koopmans, M Van Kampen, JT Kohlhepp, WJM De Jonge
Physical Review Letters 85 (4), 844, 2000
All-optical probe of coherent spin waves
M Van Kampen, C Jozsa, JT Kohlhepp, P LeClair, L Lagae, ...
Physical review letters 88 (22), 227201, 2002
Domain wall depinning governed by the spin Hall effect
PPJ Haazen, E Murè, JH Franken, R Lavrijsen, HJM Swagten, ...
Nature materials 12 (4), 299-303, 2013
Unifying ultrafast magnetization dynamics
B Koopmans, JJM Ruigrok, FD Longa, WJM De Jonge
Physical review letters 95 (26), 267207, 2005
Bipolaron mechanism for organic magnetoresistance
PA Bobbert, TD Nguyen, FWA Van Oost, B Koopmans, M Wohlgenannt
Physical review letters 99 (21), 216801, 2007
Control of speed and efficiency of ultrafast demagnetization by direct transfer of spin angular momentum
G Malinowski, F Dalla Longa, JHH Rietjens, PV Paluskar, R Huijink, ...
Nature Physics 4 (11), 855-858, 2008
Field-free magnetization reversal by spin-Hall effect and exchange bias
A van den Brink, G Vermijs, A Solignac, J Koo, JT Kohlhepp, ...
Nature communications 7 (1), 10854, 2016
Thickness dependence of the interfacial Dzyaloshinskii–Moriya interaction in inversion symmetry broken systems
J Cho, NH Kim, S Lee, JS Kim, R Lavrijsen, A Solignac, Y Yin, DS Han, ...
Nature communications 6 (1), 7635, 2015
Ultrafast Generation of Ferromagnetic Order via a Laser-Induced Phase Transformation<? format?> in FeRh Thin Films
G Ju, J Hohlfeld, B Bergman, RJM Van De Veerdonk, ON Mryasov, ...
Physical review letters 93 (19), 197403, 2004
Shift registers based on magnetic domain wall ratchets with perpendicular anisotropy
JH Franken, HJM Swagten, B Koopmans
Nature nanotechnology 7 (8), 499-503, 2012
Separating positive and negative magnetoresistance in organic semiconductor devices
FL Bloom, W Wagemans, M Kemerink, B Koopmans
Physical review letters 99 (25), 257201, 2007
Electric-field control of domain wall motion in perpendicularly magnetized materials
AJ Schellekens, A Van den Brink, JH Franken, HJM Swagten, ...
Nature communications 3 (1), 847, 2012
Theory for spin diffusion in disordered organic semiconductors
PA Bobbert, W Wagemans, FWA Van Oost, B Koopmans, M Wohlgenannt
Physical review letters 102 (15), 156604, 2009
Ultrafast spin-transfer torque driven by femtosecond pulsed-laser excitation
AJ Schellekens, KC Kuiper, R De Wit, B Koopmans
Nature communications 5 (1), 4333, 2014
Nonadiabatic Spin Transfer Torque in High Anisotropy Magnetic Nanowires<? format?> with Narrow Domain Walls
O Boulle, J Kimling, P Warnicke, M Kläui, U Rüdiger, G Malinowski, ...
Physical review letters 101 (21), 216601, 2008
Temperature Dependence of Laser-Induced Demagnetization in Ni:<? format?> A Key for Identifying the Underlying Mechanism
T Roth, AJ Schellekens, S Alebrand, O Schmitt, D Steil, B Koopmans, ...
Physical Review X 2 (2), 021006, 2012
Observation of large Kerr angles in the nonlinear optical response from magnetic multilayers
B Koopmans, MG Koerkamp, T Rasing, H van den Berg
Physical review letters 74 (18), 3692, 1995
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