Van Zalk, M., Veldhorst, M., Brinkman, A., Aarts, J., Hilgenkamp, H.
We have studied the influence of the magnetization on the superconducting transition temperature ($T_c$) in bi- and trilayers consisting of the half-metallic ferromagnet La$_{0.67}$Sr$_{0.33}$MnO$_3$...
Kelly, S., Galli, F., Komissarov, I., Aarts, J.
Thin-film colossal magnetoresistance manganites such as La$_{0.67}$Ca$_{0.33}$MnO$_{3}$ (LCMO) have now been intensely studied for more than a decade, but the issue of possible nanoscale electronic...
Zalk Van, M., Veldhorst, M., Brinkman, A., Aarts, J., Hilgenkamp, H.
We have studied the influence of the magnetization on the superconducting transition temperature (Tc) in bi- and trilayers consisting of the half-metallic ferromagnet La0.67Sr0.33MnO3 and the...
Transport properties of microstructured ultrathin films of La0.67Ca0.33MnO3 on SrTiO3 (2007)
Beekman, C., Komissarov, I., Hesselberth, M., Aarts, J.
We have investigated the electrical transport properties of 8 nm thick La0.67Ca0.33MnO3 films, sputter-deposited on SrTiO3 (STO), and etched into 5 micrometer-wide bridges by Ar-ion etching. We find...
Spin dynamics in a superconductor / ferromagnet proximity system (2007)
Bell, C., Milikisyants, S., Huber, M., Aarts, J.
The ferromagnetic resonance of thin sputtered Ni80Fe20 films grown on Nb is measured. By varying the temperature and thickness of the Nb the role of the superconductivity on the whole ferromagnetic...
Vortex relaxation and coupling in superconducting heterostructures studied by STM (2007)
Galli, F., Kes, P. H., Aarts, J.
In a sandwich consisting of two superconducting films, one weakly pinning and one strongly pinning, the vortex positions in both films are determined by the strongly pinning material and the vortex...
Interoperating Context Discovery Mechanisms (2007)
Broens, T.H.F., Poortinga, R., Aarts, J.
Context-Aware applications adapt their behaviour to the current situation of the user. This information, for instance user location and user availability, is called context information. Context is...
Flux-flow induced giant magnetoresistance in all-amorphous superconductor-ferromagnet hybrids (2006)
Bell, C., Tursucu, S., Aarts, J.
We present magnetoresistance measurements on all-amorphous ferromagnet (F) / superconductor (S) heterostructures. The F/S/F trilayers show large magnetoresistance peaks in a small field range around...
Charge Localization due to RKKY Interaction in the Spin Glass AuFe (2006)
Gorshunov, B., Prokhorov, A. S., Kaiser, S., Faltermeier, D., Yasin, S., Dumm, M., ...
Measurements of electrodynamic response of of spin glass AuFe films in comparison with pure gold films are performed at frequencies from 0.3 THz (10 cm-1) up to 1000 THz (33000 cm-1) using different...
Inverse spin switch effects in Ferromagnet / Superconductor hybrids with strong ferromagnets (2005)
Rusanov, A. Yu., Habraken, S., Aarts, J.
In F/S/F trilayers where the magnetization directions of the F layers can be controlled separately, it has theoretically been predicted that the antiparallel (AP) configuration can have a higher...
Critical voltage of a mesoscopic superconductor (2005)
Keizer, R. S., Flokstra, M. G., Aarts, J., Klapwijk, T. M.
We study the role of the quasiparticle distribution function f on the properties of a superconducting nanowire. We employ a numerical calculation based upon the Usadel equation. Going beyond linear...
Rusanov, A. Yu., Hesselberth, M., Aarts, J., Buzdin, A. I.
In (S/F) hybrids the suppression of superconductivity by the exchange field h_ex of the ferromagnet can be partially lifted when different directions of h_ex are sampled simultaneously by the Cooper...
Depairing currents in superconducting films of Nb and amorphous MoGe (2003)
Rusanov, A. Yu., Hesselberth, M. B. S., Aarts, J.
We report on measuring the depairing current J_{dp} in thin superconducting films as a function of temperature. The main difficulties in such measurements are that heating has to be avoided, either...
Depairing currents in superconductor / ferromagnet Nb/CuNi trilayers close to T$_c$ (2003)
Rusanov, A., Hesselberth, M., Habraken, S., Aarts, J.
In superconductor/ferromagnet (S/F) heterostructures, the exchange field $h_{ex}$ of the F-layer suppresses the superconducting order parameter in the S-layer via the proximity effect. One issue in...
Proximity effects in the superconductor / heavy fermion bilayer system Nb / CeCu_6 (2003)
Otop, A., Hendrikx, R. W. A., Hesselberth, M. B. S., Ciuhu, C., Lodder, A., Aarts, J.
We have investigated the proximity effect between a superconductor (Nb) and a 'Heavy Fermion' system (CeCu_6) by measuring critical temperatures $T_c$ and parallel critical fields...
STM Imaging of Flux Line Arrangements in the Peak Effect Regime (2002)
Troyanovski, A. M., Van Hecke, M., Saha, N., Aarts, J., Kes, P. H.
We present the results of a study of vortex arrangements in the peak-effect regime of 2H-NbSe_2 by scanning tunneling microscopy. By slowly increasing the temperature in a constant magnetic field, we...
Disorder-induced melting of the charge order in thin films of Pr0.5Ca0.5MnO3 (2002)
Yang, Z. Q., Hendrikx, R. W. A., Aarts, J.
We have studied the magnetic-field-induced melting of the charge order in thin films of Pr0.5Ca0.5MnO3 (PCMO) films on SrTiO3 (STO) by X-ray diffraction, magnetization and transport measurement. At...
Inhomogeneous superconductivity induced in a weak ferromagnet (2001)
Rusanov, A., Boogaard, R., Hesselberth, M., Sellier, H., Aarts, J.
Under certain conditions, the order parameter induced by a superconductor (S) in a ferromagnet (F) can be inhomogeneous and oscillating, which results e.g. in the so-called pi-coupling in S/F/S...
Groten, D., Aarts, J., Nieuwenhuys, G. J., Mydosh, J. A.
High-quality thin polycrystalline films of the heavy-fermion compound CeCu_6 were prepared by sputter deposition. The thicker of these films (with thickness up to around 200 nm) reproduce the...
Strain release of (La,Ca)MnO3 thin films by YBa2Cu3O7-d (2001)
Yang, Z. Q., Hendrikx, R., Qin, Y., Zandbergen, H. W., Aarts, J.
La1-xCaxMnO3 (x = 0.3; LCMO) films of different thickness were sputter-deposited on SrTiO3(100) (STO) single crystal substrates with and without YBa2Cu3O7-d (YBCO) as template layer. The electric and...
Depairing currents in the superconductor/ferromagnet proximity system Nb/Fe (2001)
Geers, J. M. E., Hesselberth, M. B. S., Aarts, J., Golubov, A. A.
We have investigated the behaviour of the depairing current J_{dp} in ferromagnet/superconductor/ferromagnet (F/S/F) trilayers as function of the thickness d_s of the superconducting layers....
Coupling of two superconductors through a ferromagnet: evidence for a pi junction (2001)
Ryazanov, V.V., Oboznov, V.A., Rusanov, A.Yu., Veretennikov, A.V., Golubov, A., Aarts, J.
Coupling of Two Superconductors through a Ferromagnet: Evidence for a Ï Junction (2001)
Ryazanov, V.V., Oboznov, V.V., Rusanov, A. Yu., Veretennikov, A.V., Golubov, A.A., Aarts, J.
We report measurements of the temperature dependence of the critical current, Ic, in Josephson junctions consisting of conventional superconducting banks of Nb and a weakly ferromagnetic interlayer...
Coupling of Two Superconductors through a Ferromagnet (2001)
Aarts, J., Golubov, A. A., Oboznov, V. A., Rusanov, A. Y., Ryazanov, V. V., Veretennikov, A. V.
Coupling of two superconductors through a ferromagnet : evidence for a pi-junction (2000)
Ryazanov, V. V., Oboznov, V. A., Rusanov, A. Yu., Veretennikov, A. V., Golubov, A. A., Aarts, J.
We report measurements of the temperature dependence of the critical current in Josephson junctions consisting of conventional superconducting banks of Nb and a weakly ferromagnetic interlayer of a...
Spatially Inhomogeneous Metal-Insulator Transition in Doped Manganites (1999)
Fath, M., Freisem, S., Menovsky, A.A., Tomioka, Y., Aarts, J., Mydosh, J.A.
Tunneling spectroscopy on the correlation effects in FeSi (1999)
Fath, M., Aarts, J., Menovsky, A.A., Nieuwenhuys, G.J., Mydosh, J.A.
Interface transparency of superconductor/ferromagnetic multilayers (1997)
Aarts, J., Geers, J.M.E., Bruck, E.H., Golubov, A.A., Coehoorn, R., Olsovec, M.
On the interface transparency of superconductor/ferromagnetic multilayers (1997)
Aarts, J., Geers, J.M.E., Bruck, E., Golubov, A., Coehoorn, R.
Tunneling and point contact spectroscopy on UPd2Al3 in the normal state (1994)
Volodin, A.P., Aarts, J., Menovsky, A.A., Nieuwenhuys, G.J., Mydosh, J.A.
Nuclear quadrupole resonance and heavy-fermion superconductivity in CeCu2Si2 (1984)
MacLaughlin, D.E., Tien, C., Gupta, L.C., Aarts, J., Boer, F.R. De
Nuclear quadrupole resonance and heavy-fermion superconductivity in CeCu2Si2 (1984)
MacLaughlin, D.E., Tien, C., Gupta, L.C., Aarts, J., Boer, F.R. De
Modeling and simulation in biomedicine.
A group of researchers and educators in The Netherlands, Germany and Czechoslovakia have developed and adapted mathematical computer models of phenomena in the field of physiology and biomedicine for...
A model curriculum of health care informatics for Dutch higher professional education.
This paper describes the results of a two year project to design a model curriculum of health care informatics for Dutch higher professional education. The core of the curriculum are sixteen modules...