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A Geant4 based simulation platform of the HollandPTC R&D proton beamline for radiobiological studies

Groenendijk, C.F. (author), Rovituso, M. (author), Lathouwers, D. (author), Brown, J.M.C. (author)

A Geant4 based simulation platform of the Holland Proton Therapy Centre (HollandPTC, Netherlands) R&D beamline (G4HPTC-R&D) was developed to enable the planning, optimisation and advanced dosimetry for radiobiological studies. It implemented a six parameter non-symmetrical Gaussian pencil beam surrogate model to simulate the R&D...

journal article 2023

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Electrostatically Driven Polarization Flop and Strain-Induced Curvature in Free-Standing Ferroelectric Superlattices

Li, Yaqi (author), Zatterin, Edoardo (author), Conroy, Michele (author), Pylypets, Anastasiia (author), Borodavka, Fedir (author), Björling, Alexander (author), Groenendijk, D.J. (author), Lesne, E.L. (author), Caviglia, A. (author)

The combination of strain and electrostatic engineering in epitaxial heterostructures of ferroelectric oxides offers many possibilities for inducing new phases, complex polar topologies, and enhanced electrical properties. However, the dominant effect of substrate clamping can also limit the electromechanical response and often leaves...

journal article 2022

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Coupling Charge and Topological Reconstructions at Polar Oxide Interfaces

van Thiel, T.C. (author), Brzezicki, W. (author), Autieri, C. (author), Hortensius, J.R. (author), Afanasiev, D. (author), Janssen, N. (author), Groenendijk, D.J. (author), Van Aert, S. (author), Caviglia, A. (author)

In oxide heterostructures, different materials are integrated into a single artificial crystal, resulting in a breaking of inversion symmetry across the heterointerfaces. A notable example is the interface between polar and nonpolar materials, where valence discontinuities lead to otherwise inaccessible charge and spin states. This approach...

journal article 2021

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Reducing anionic surfactant adsorption using polyacrylate as sacrificial agent investigated by QCM-D

Liu, Z. (author), Hedayati, Pegah (author), Ghatkesar, M.K. (author), Sun, Weichao (author), Onay, Hayati (author), Groenendijk, Dirk (author), van Wunnik, Johannes (author), Sudhölter, Ernst J. R. (author)

Surfactant losses by adsorption to rock surfaces make surfactant-based enhanced oil recovery economically less feasible. We investigated polyacrylate (PA) as a sacrificial agent in the reduction of anionic surfactant adsorption with focus on calcite surfaces by using quartz crystal microbalance with dissipation monitoring. It was found that...

journal article 2021

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Berry phase engineering at oxide interfaces

Groenendijk, D.J. (author), van Thiel, T.C. (author), Hortensius, J.R. (author), Afanasiev, D. (author), Van Den Bos, K. H.W. (author), Van Aert, S. (author), Filippetti, A. (author), Picozzi, S. (author), Caviglia, A. (author)

Three-dimensional strontium ruthenate (SrRuO3) is an itinerant ferromagnet that features Weyl points acting as sources of emergent magnetic fields, anomalous Hall conductivity, and unconventional spin dynamics. Integrating SrRuO3 in oxide heterostructures is potentially a novel route to engineer emergent electrodynamics, but its electronic...

journal article 2020

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Anisotropic magnetoresistance in spin–orbit semimetal SrIrO ₃

Groenendijk, D.J. (author), Manca, N. (author), de Bruijckere, J. (author), Monteiro, Ana Mafalda R.V.L. (author), Gaudenzi, R. (author), van der Zant, H.S.J. (author), Caviglia, A. (author)

SrIrO ₃, the three-dimensional member of the Ruddlesden–Popper iridates, is a paramagnetic semimetal characterised by a the delicate interplay between spin–orbit coupling and Coulomb repulsion. In this work, we study the anisotropic magnetoresistance (AMR) of SrIrO ₃ thin films, which is closely linked to spin–orbit...

journal article 2020

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Ultrathin complex oxide nanomechanical resonators

Davidovikj, D. (author), Groenendijk, D.J. (author), Monteiro, A. M.R.V.L. (author), Dijkhoff, A. (author), Afanasiev, D. (author), Siskins, M. (author), van der Zant, H.S.J. (author), Caviglia, A. (author), Steeneken, P.G. (author)

Complex oxide thin films and heterostructures exhibit a variety of electronic phases, often controlled by the mechanical coupling between film and substrate. Recently it has become possible to isolate epitaxially grown single-crystalline layers of these materials, enabling the study of their properties in the absence of interface effects. In...

journal article 2020

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Extraordinary Hall balance in ultrathin SrRuO₃ bilayers

van Thiel, T.C. (author), Groenendijk, D.J. (author), Caviglia, A. (author)

The correlated 4d transition metal oxide SrRuO₃ (SRO) features an anomalous Hall effect that originates from momentum-space sources of Berry curvature and depends sensitively on the magnetization. Here, we exploit this sensitivity and realize an epitaxial extraordinary Hall balance device, consisting of two ultrathin layers of SRO,...

journal article 2020

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Optimal design, manufacturing and testing of non-conventional laminates

Peeters, D.M.J. (author), Irisarri, François Xavier (author), Groenendijk, Chris (author), Růžek, Roman (author)

Composite materials are finding increasing application, for example in commercial aircraft. Traditionally fiber angles are restricted to 0°,±45° and 90°. The current work exploits the possibility of using multiple ’non-conventional’ laminates where either fiber steering (‘variable stiffness’), ply drops (‘variable thickness’), or a...

journal article 2019

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Spin–orbit coupling and geometric phases at oxide interfaces

Groenendijk, D.J. (author)

In this work, we investigate electronic and magnetic phenomena in thin films and heterostructures of transition metal oxides with strong spin–orbit coupling. Ultrathin films are prepared by pulsed laser deposition, a technique which enables layer-by-layer growth of complex materials on atomically flat crystal surfaces. The properties of these...

doctoral thesis 2019

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Band inversion driven by electronic correlations at the (111) LaAlO3/SrTiO3 interface

Monteiro, A. M.R.V.L. (author), Vivek, M. (author), Groenendijk, D.J. (author), Bruneel, P. (author), Leermakers, I. (author), Zeitler, U. (author), Gabay, M. (author), Caviglia, A. (author)

Quantum confinement at complex oxide interfaces establishes an intricate hierarchy of the strongly correlated d orbitals which is widely recognized as a source of emergent physics. The most prominent example is the (001) LaAlO3/SrTiO3 (LAO/STO) interface, which features a dome-shaped phase diagram of superconducting critical temperature and...

journal article 2019

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Ultrafast Spin Dynamics in Photodoped Spin-Orbit Mott Insulator Sr2IrO4

Afanasiev, D. (author), Gatilova, A. (author), Groenendijk, D.J. (author), Ivanov, B. A. (author), Gibert, M. (author), Gariglio, S. (author), Mentink, J. (author), Li, J. (author), Caviglia, A. (author)

Ultrafast photodoping of the Mott insulators, possessing strong correlation between electronic and magnetic degrees of freedom, holds promise for launching an ultrafast dynamics of spins which cannot be described in terms of conventional models of ultrafast magnetism. Here we study the ultrafast laser-induced dynamics of the magnetic order in...

journal article 2019

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Incorporating the travellers’ experience value in assessing the quality of transit nodes: A Rotterdam case study

Groenendijk, Laura (author), Rezaei, J. (author), Correia, Gonçalo (author)

The quality of a transit node is determined by the experience of travellers. However, the reference model for classifying the quality of a transit node, the so-called Node-Place model, does not consider this important dimension (experience). In this paper, we propose a method to add quality from a traveller's perspective to the Node-Place (NP...

journal article 2018

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Balanced electron-hole transport in spin-orbit semimetal SrIrO 3 heterostructures

Manca, N. (author), Groenendijk, D.J. (author), Pallecchi, Ilaria (author), Autieri, Carmine (author), Tang, Lucas M.K. (author), Telesio, Francesca (author), Mattoni, G. (author), McCollam, Alix (author), Picozzi, Silvia (author), Caviglia, A. (author)

Relating the band structure of correlated semimetals to their transport properties is a complex and often open issue. The partial occupation of numerous electron and hole bands can result in properties that are seemingly in contrast with one another, complicating the extraction of the transport coefficients of different bands. The 5d oxide...

journal article 2018

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Spin-Orbit Semimetal SrIrO3 in the Two-Dimensional Limit

Groenendijk, D.J. (author), Autieri, C. (author), Girovský, J. (author), Martinez Velarte, M.C. (author), Manca, N. (author), Mattoni, G. (author), RinconVieiraLugarinhoMonteiro, A.M. (author), Gauquelin, N. (author), Verbeeck, J (author), Otte, A. F. (author), Gabay, M. (author), Picozzi, S. (author), Caviglia, A. (author)

We investigate the thickness-dependent electronic properties of ultrathin SrIrO3 and discover a transition from a semimetallic to a correlated insulating state below 4 unit cells. Low-temperature magnetoconductance measurements show that spin fluctuations in the semimetallic state are significantly enhanced while approaching the transition...

journal article 2017

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Insulator-to-Metal Transition at Oxide Interfaces Induced by WO₃ Overlayers

Mattoni, G. (author), Baek, David J. (author), Manca, N. (author), Verhagen, N.F. (author), Groenendijk, D.J. (author), Kourkoutis, Lena F. (author), Filippetti, Alessio (author), Caviglia, A. (author)

Interfaces between complex oxides constitute a unique playground for two-dimensional electron systems (2DESs), where superconductivity and magnetism can arise from combinations of bulk insulators. The 2DES at the LaAlO₃/SrTiO₃ interface is one of the most studied in this regard, and its origin is determined by the polar...

journal article 2017

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Two-dimensional superconductivity at the (111) LaAlO3/SrTiO3 interface

RinconVieiraLugarinhoMonteiro, A.M. (author), Groenendijk, D.J. (author), Groen, Inge (author), de Bruijckere, J. (author), Gaudenzi, R. (author), van der Zant, H.S.J. (author), Caviglia, A. (author)

We report on the discovery and transport study of the superconducting ground state present at the (111)LaAlO3/SrTiO3 (LAO/STO) interface. The superconducting transition is consistent with a Berezinskii-Kosterlitz-Thouless transition and its two-dimensional nature is further corroborated by the anisotropy of the critical magnetic field, as...

journal article 2017

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Side Gate Tunable Josephson Junctions at the LaAlO₃/SrTiO₃ Interface

RinconVieiraLugarinhoMonteiro, A.M. (author), Groenendijk, D.J. (author), Manca, N. (author), Mulazimoglu, E. (author), Goswami, S. (author), Blanter, Y.M. (author), Vandersypen, L.M.K. (author), Caviglia, A. (author)

Novel physical phenomena arising at the interface of complex oxide heterostructures offer exciting opportunities for the development of future electronic devices. Using the prototypical LaAlO₃/SrTiO₃ interface as a model system, we employ a single-step lithographic process to realize gate-tunable Josephson junctions...

journal article 2017

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Reconstitution of basic mitotic spindles in spherical emulsion droplets

Vleugel, M. (author), Roth, S.C.A. (author), Groenendijk, Celebrity F. (author), Dogterom, A.M. (author)

Mitotic spindle assembly, positioning and orientation depend on the combined forces generated by microtubule dynamics, microtubule motor proteins and cross-linkers. Growing microtubules can generate pushing forces, while depolymerizing microtubules can convert the energy from microtubule shrinkage into pulling forces, when attached, for...

journal article 2016

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Epitaxial growth and thermodynamic stability of SrIrO₃/SrTiO₃ heterostructures

Groenendijk, D.J. (author), Manca, N. (author), Mattoni, G. (author), Kootstra, L. (author), Gariglio, S. (author), Huang, Y. (author), Van Heumen, E. (author), Caviglia, A. (author)

Obtaining high-quality thin films of 5d transition metal oxides is essential to explore the exotic semimetallic and topological phases predicted to arise from the combination of strong electron correlations and spin-orbit coupling. Here, we show that the transport properties of SrIrO₃ thin films, grown by pulsed laser deposition,...

journal article 2016