Key publications

Field-free magnetization reversal by spin-Hall effect and exchange bias
A. van den Brink, G. Vermijs, A. Solignac, J. Koo, J. T. Kohlhepp, H. J. M. Swagten & B. Koopmans
Nature Communications 7, 10854 (2016)
http://dx.doi.org/10.1038/ncomms10854

Thickness dependence of the interfacial Dzyaloshinskii–Moriya interaction in inversion symmetry broken systems
J. Cho, N.-H. Kim, S. Lee, J.-S. Kim, R. Lavrijsen, A. Solignac, Y. Yin, D.-S. Han, N.J.J. van Hoof, H.J.M. Swagten, B. Koopmans & C.-Y. You
Nature Communications 6, 7635 (2015)
http://dx.doi.org/10.1038/ncomms8635

Ultrafast spin-transfer torque driven by femtosecond pulsed-laser excitation
A. J. Schellekens, K. C. Kuiper, R.R.J.C. de Wit and B Koopmans
Nature Communications 5, 4333 (2014)
http://dx.doi.org/10.1038/ncomms5333

Tuning organic magnetoresistance in polymer-fullerene blends by controlling spin reaction pathways
P. Janssen, M. Cox , S.H.W. Wouters, M. Kemerink, M.M. Wienk and B. Koopmans
Nature Communications 4, 2286 (2013)
http://dx.doi.org/10.1038/ncomms3286

Domain wall depinning governed by the spin Hall effect
P. P. J. Haazen, E. Murè, J. H. Franken, R. Lavrijsen, H. J. M. Swagten and B. Koopmans
Nature Materials 12, 299 (2013)
http://dx.doi.org/10.1038/nmat3553

Electric-field control of domain wall motion in perpendicularly magnetized materials
A.J. Schellekens, A. van den Brink, J.H. Franken, H.J.M. Swagten, B. Koopmans
Nature Communications 3, 847 (2012)
http://dx.doi.org/10.1038/ncomms1848

Shift registers based on magnetic domain wall ratchets with perpendicularly anisotropy
J.H. Franken, H.J.M. Swagten, B. Koopmans
NatureNanotechnology 7, 499 - 503 (2012)
http://dx.doi.org/10.1038/nnano.2012.111

Spin-Spin Interactions in Organic Magnetoresistance Probed by Angle-Dependent Measurements
W. Wagemans, A. J. Schellekens, M. Kemper, F. L. Bloom, P. A. Bobbert, and B. Koopmans
Phys. Rev. Lett. 106, 196802 (2011)
http://dx.doi.org/10.1103/PhysRevLett.106.196802

Key publications 2000 - 2010

Explaining the paradoxical diversity of ultrafast laser-induced demagnetization
B. Koopmans, G. Malinowski, F. Dalla Longa, D. Steiauf, M. Faehnle, T. Roth, M. Cinchetti, and M. Aeschlimann
Nature Materials 9, 259 (2010)

Long-range electron interferences at a metal surface induced by buried nanocavities
O. Kurnosikov, J.H. Nietsch, M. Sicot, H.J.M. Swagten, B. Koopmans
Phys. Rev. Lett. 102, 066101 (2009)

Control of speed and efficiency of ultrafast demagnetization by direct transfer of spin angular momentum
G. Malinowski, F. Dalla Longa, J.H.H. Rietjens, P.V. Paluskar, R. Huijink, H.J.M. Swagten, B. Koopmans
Nature Physics 4, 855 (2008)

Separating Positive and Negative Magnetoresistance in Organic Semiconductor Devices
F.L. Bloom, W. Wagemans, M. Kemerink, and B. Koopmans
Phys. Rev. Lett. 99, 257201 (2007)

Stabilization of meta-stable expanded face-centered-tetragonal manganese
J.T. Kohlhepp, and W.J.M. de Jonge
Phys. Rev. Lett. 96, 237201 (2006)

Unifying ultrafast magnetization dynamics
B. Koopmans, J.J.M. Ruigrok, F. Dalla Longa, and W.J.M. de Jonge
Phys. Rev. Lett. 95, 267207 (2005)

Ultrafast generation of ferromagnetic order via laser-induced phase transformation in FeRh thin films
G. Ju, J. Hohlfeld, B. Bergman, R.J.M. van de Veerdonk, O.N. Mryasov, J.-Y. Kim,
X. Wu, D. Weller, and B. Koopmans

Phys. Rev. Lett. 93, 197403 (2004)

All-optical probe of coherent spin waves
M. van Kampen, C. Jozsa, J.T. Kohlhepp, P. LeClair, L. Lagae, W.J.M. de Jonge,
and B. Koopmans
Phys. Rev. Lett. 88, 227201 (2002)

Interfacial density of states in magnetic tunnel junctions  
P. LeClair, J.T. Kohlhepp, H.J.M. Swagten, and W.J.M. de Jonge
Phys. Rev. Lett. 86, 1066 (2001)

Ultrafast magneto-optics in nickel: magnetism or optics?
B. Koopmans, M. van Kampen, J.T. Kohlhepp, and W.J.M. de Jonge
Phys. Rev. Lett. 85, 844 (2000)

Apparent spin polarization decay in Cu dusted Co/Al2O3/Co tunnel junctions
P. LeClair, H.J.M. Swagten, J.T Kohlhepp, R.J.M. van de Veerdonk, and W.J.M. de Jonge
Phys. Rev. Lett. 84, Febr./March 2000