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Novel Batch Titanium Nitride CVD Process for Advanced Metal Electrodes

Zagwijn, P.M. (author), Verweij, W. (author), Pierreux, D. (author), Noureddine, A. (author), Bankras, R. (author), Oosterlaken, E. (author), Snijders, G.J. (author), Van den Hout, M. (author), Fischer, P. (author), Wilhelm, R. (author), Knapp, M. (author)

journal article 2008

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Josephson critical current in a long mesoscopic S-N-S junction

Dubos, P. (author), Courtois, H. (author), Pannetier, B. (author), Wilhelm, F.K. (author), Zaikin, A.D. (author), Schön, G. (author)

journal article 2001

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Asymptotic von Neumann measurement strategy for solid-state qubits

Wilhelm, F.K. (author)

journal article 2003

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Single-qubit gates in frequency-crowded transmon systems

Schutjens, R. (author), Abu Dagga, F. (author), Egger, D.J. (author), Wilhelm, F.K. (author)

Recent experimental work on superconducting transmon qubits in three-dimensional (3D) cavities shows that their coherence times are increased by an order of magnitude compared to their two-dimensional cavity counterparts. However, to take advantage of these coherence times while scaling up the number of qubits it is advantageous to address...

journal article 2013

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Superconducting single-charge transistor in a tunable dissipative environment

Wilhelm, F.K. (author), Schon, G. (author), Zimanyi, G.T. (author)

journal article 2001

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Theoretical analysis of continuously driven dissipative solid-state qubits

Goorden, M.C. (author), Wilhelm, F.K. (author)

journal article 2003

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Novel Batch Titanium Nitride CVD Process for Advanced Metal Electrodes

Zagwijn, P.M. (author), Verweij, W. (author), Pierreux, D. (author), Noureddine, A. (author), Bankras, R. (author), Oosterlaken, E. (author), Snijders, G.J. (author), Van den Hout, M. (author), Fischer, P. (author), Wilhelm, R. (author), Knapp, M. (author)

This article describes a novel CVD process for TiN films developed in a 300 mm Vertical Furnace. We have solved Chlorine incorporation at low temperature inside the TiN layer while at the same time the batch process yields a 3 times higher throughput per dual reactor system compared to a single wafer system with 3 chambers.We show process...

journal article 2009

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Multiple low-temperature skyrmionic states in a bulk chiral magnet

Bannenberg, L.J. (author), Wilhelm, Heribert (author), Cubitt, Robert (author), Labh, A. (author), Schmidt, Marcus P. (author), Lelievre-Berna, Eddy (author), Pappas, C. (author), Mostovoy, Maxim (author), Leonov, Andrey O. (author)

Magnetic skyrmions are topologically protected nanoscale spin textures with particle-like properties. In bulk cubic helimagnets, they appear under applied magnetic fields and condense spontaneously into a lattice in a narrow region of the phase diagram just below the magnetic ordering temperature, the so-called A-phase. Theory, however, predicts...

journal article 2019

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Reorientations, relaxations, metastabilities, and multidomains of skyrmion lattices

Bannenberg, L.J. (author), Qian, F. (author), Dalgliesh, R. M. (author), Martin, N (author), Chaboussant, G. (author), Schmidt, M (author), Schlagel, D. L. (author), Lograsso, T. A. (author), Wilhelm, H (author), Pappas, C. (author)

Magnetic skyrmions are nanosized topologically protected spin textures with particlelike properties. They can form lattices perpendicular to the magnetic field, and the orientation of these skyrmion lattices with respect to the crystallographic lattice is governed by spin-orbit coupling. By performing small-angle neutron scattering measurements,...

journal article 2017

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Tilted Spirals and Low-temperature Skyrmions in Cu₂OSeO₃

Crisanti, M. (author), Leonov, A. O. (author), Cubitt, R. (author), Labh, A. (author), Wilhelm, H. (author), Schmidt, M. P. (author), Pappas, C. (author)

journal article 2023

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Tilted spirals and low-temperature skyrmions in Cu2OSeO3

Crisanti, M. (author), Leonov, A. O. (author), Cubitt, R. (author), Labh, A. (author), Wilhelm, H. (author), Schmidt, Marcus P. (author), Pappas, C. (author)

The bulk helimagnet Cu2OSeO3 represents a unique example in the family of B20 cubic helimagnets exhibiting a tilted spiral and skyrmion phase at low temperatures when the magnetic field is applied along the easy (001) crystallographic direction. Here we present a systematic study of the stability and ordering of these low-temperature magnetic...

journal article 2023

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Phase diagram and magnetic relaxation phenomena in Cu2OSeO3

Qian, F. (author), Wilhelm, H. (author), Aqeel, A. (author), Palstra, T.T.M. (author), Lefering, A.J.E. (author), Brück, E.H. (author), Pappas, C. (author)

We present an investigation of the magnetic-field-temperature phase diagram of Cu2OSeO3 based on dc magnetization and ac susceptibility measurements covering a broad frequency range of four orders of magnitude, from very low frequencies reaching 0.1 Hz up to 1 kHz. The experiments were performed in the vicinity of Tc=58.2 K and around the...

journal article 2016

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Spin Hall magnetoresistance in a canted ferrimagnet

Ganzhorn, Kathrin (author), Barker, Joseph (author), Schlitz, Richard (author), Piot, Benjamin A. (author), Ollefs, Katharina (author), Guillou, F. (author), Wilhelm, Fabrice (author), Rogalev, Andrei (author), Bauer, G.E. (author)

We study the spin Hall magnetoresistance effect in ferrimagnet/normal metal bilayers, comparing the response in collinear and canted magnetic phases. In the collinear magnetic phase, in which the sublattice magnetic moments are all aligned along the same axis, we observe the conventional spin Hall magnetoresistance. In contrast, in the canted...

journal article 2016

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CENP-B-mediated DNA loops regulate activity and stability of human centromeres

Chardon, Florian (author), Japaridze, A. (author), Witt, Hannes (author), Velikovsky, Leonid (author), Chakraborty, Camellia (author), Wilhelm, Therese (author), Dumont, Marie (author), Yang, W.W.W. (author), Dekker, C. (author)

Chromosome inheritance depends on centromeres, epigenetically specified regions of chromosomes. While conventional human centromeres are known to be built of long tandem DNA repeats, much of their architecture remains unknown. Using single-molecule techniques such as AFM, nanopores, and optical tweezers, we find that human centromeric DNA...

journal article 2022

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Restless Tuneup of High-Fidelity Qubit Gates

Rol, M.A. (author), Bultink, C.C. (author), O'Brien, T.E. (author), De Jong, S. R. (author), Theis, L. S. (author), Fu, X. (author), Lüthi, F. (author), Vermeulen, R.F.L. (author), de Sterke, J.C. (author), Bruno, A. (author), Deurloo, D. (author), Schouten, R.N. (author), Wilhelm, FK (author), DiCarlo, L. (author)

We present a tuneup protocol for qubit gates with tenfold speedup over traditional methods reliant on qubit initialization by energy relaxation. This speedup is achieved by constructing a cost function for Nelder-Mead optimization from real-time correlation of nondemolition measurements interleaving gate operations without pause. Applying the...

journal article 2017

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New magnetic phase of the chiral skyrmion material Cu₂OSeO₃

Qian, F. (author), Bannenberg, L.J. (author), Wilhelm, Heribert (author), Chaboussant, Grégory (author), Debeer-Schmitt, Lisa M. (author), Schmidt, Marcus P. (author), Aqeel, Aisha (author), Palstra, Thomas T.M. (author), Brück, E.H. (author), Lefering, A.J.E. (author), Pappas, C. (author), Mostovoy, Maxim (author), Leonov, Andrey O. (author)

The lack of inversion symmetry in the crystal lattice of magnetic materials gives rise to complex noncollinear spin orders through interactions of a relativistic nature, resulting in interesting physical phenomena, such as emergent electromagnetism. Studies of cubic chiral magnets revealed a universal magnetic phase diagram composed of...

journal article 2018

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Life-Cycle Assessment of a Multi-Megawatt Airborne Wind Energy System

van Hagen, L.J.A. (author), Petrick, Kristian (author), Wilhelm, Stefan (author), Schmehl, R. (author)

A key motivation for airborne wind energy is its potential to reduce the amount of material required for the generation of renewable energy. On the other hand, the materials used for airborne systems’ components are generally linked to higher environmental impacts. This study presents comparative life-cycle analyses for future multi-megawatt...

journal article 2023

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De tinertsafzettingen van het eiland Singkep en de genese der alluviale afzettingen

Wilhelm, C.H.J. (author)

doctoral thesis 1928

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Life Cycle Assessment of Electricity Production from an Airborne Wind Energy System

Wilhelm, S. (author)

conference paper 2015

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Status Update and Review of the AP-3 Development

Bosch, Jaap (author), Sieberling, Sören (author), Wilhelm, Stefan (author)

conference paper 2019