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Schreier, M. (author), Chiba, T. (author), Niedermayr, A. (author), Lotze, J. (author), Huebl, H. (author), Geprags, S. (author), Takahashi, S. (author), Bauer, G.E.W. (author), Gross, R. (author), Goennenwein, S.T.B. (author)We report the observation of current-induced spin torque resonance in yttrium iron garnet/platinum bilayers. An alternating charge current at GHz frequencies in the platinum gives rise to dc spin pumping and spin Hall magnetoresistance rectification voltages, induced by the Oersted fields of the ac current and the spin Hall effect-mediated spin...journal article 2015
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Van Marrewijk, N. (author), Mirzaei, B. (author), Hayton, D. (author), Gao, J.R. (author), Kao, T.Y. (author), Hu, Q. (author), Reno, J.L. (author)We have performed frequency locking of a dual, forward reverse emitting third-order distributed feedback quantum cascade laser (QCL) at 3.5 THz. By using both directions of THz emission in combination with two gas cells and two power detectors, we can for the first time perform frequency stabilization, while monitor the frequency locking quality...journal article 2015
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Yan, P. (author), Cao, Y. (author), Sinova, J. (author)We predict a thermodynamic magnon recoil effect for domain wall motions in the presence of temperature gradients. All current thermodynamic theories assert that a magnetic domain wall must move toward the hotter side, based on equilibrium thermodynamic arguments. Microscopic calculations, on the other hand, show that a domain wall can move...journal article 2015
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Yalcin, A.O. (author)Synthesis of nanocrystals (NCs) and heteronanocrystals (HNCs) has developed very fast particularly in the last decade. Nowadays, various structures and different morphologies of NCs and HNCs can be prepared with a very narrow size distribution. The nanoscale dimensions of these crystals lead to interesting phenomena (e.g. electronic properties)...doctoral thesis 2015
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Kozlova, T. (author)Electromigration is a process in which a metallic contact line is thinned by passing a current through it; which occurs due to a gradual displacement of atoms, ultimately leading to destruction of the wire. Despite the active investigations on electromigration for over fifty years, until now there is no general theory of the process and many...doctoral thesis 2015
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Evers, W.H. (author), Schins, J.M. (author), Aerts, M. (author), Kulkarni, A. (author), Capiod, P. (author), Berthe, M. (author), Grandidier, B. (author), Delerue, C. (author), van der Zant, H.S.J. (author), van Overbeek, C. (author), Peterse, J.L. (author), Vanmaekelbergh, D. (author), Siebbeles, L.D.A. (author)Two-dimensional networks of quantum dots connected by atomic bonds have an electronic structure that is distinct from that of arrays of quantum dots coupled by ligand molecules. We prepared atomically coherent two-dimensional percolative networks of PbSe quantum dots connected via atomic bonds. Here, we show that photoexcitation leads to...journal article 2015
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Zandbergen, H.W. (author)The present invention is in the field of a transferrable system for use in in-situ experiments in a microscope and spectrometer, use of said transferrable system, and a microscope or spectrometer comprising said transferrable system, wherein the microscope is selected from an electron microscope, an IR-microscope, a Raman-microscope, X-ray micro...patent 2015
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De Lange, G. (author), Van Heck, B. (author), Bruno, A. (author), Van Woerkom, D.J. (author), Geresdi, A. (author), Plissard, S.R. (author), Bakkers, E.P.A.M. (author), Akhmerov, A.R. (author), Di Carlo, L. (author)We report the realization of quantum microwave circuits using hybrid superconductor-semiconductor Josephson elements comprised of InAs nanowires contacted by NbTiN. Capacitively shunted single elements behave as transmon circuits with electrically tunable transition frequencies. Two-element circuits also exhibit transmonlike behavior near zero...journal article 2015
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Schuetz, M.J.A. (author), Kessler, E.M. (author), Giedke, G. (author), Vandersypen, L.M.K. (author), Lukin, M.D. (author), Cirac, J.I. (author)We propose a universal, on-chip quantum transducer based on surface acoustic waves in piezoactive materials. Because of the intrinsic piezoelectric (and/or magnetostrictive) properties of the material, our approach provides a universal platform capable of coherently linking a broad array of qubits, including quantum dots, trapped ions, nitrogen...journal article 2015
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Kramer, E. (author), Van Dorp, J. (author), Van Leeuwen, R. (author), Venstra, W.J. (author)We investigate the effect of mechanical strain on the dynamics of thin MoS2 nanodrum resonators. Using a piezoelectric crystal, compressive and tensile biaxial strain is induced in initially flat and buckled devices. In the flat device, we observe a remarkable strain-dependence of the resonance line width, while the change in the resonance...journal article 2015
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Scarlino, P. (author), Kawakami, E. (author), Ward, D.R. (author), Savage, D.E. (author), Lagally, M.G. (author), Friesen, M. (author), Coppersmith, S.N. (author), Eriksson, M.A. (author), Vandersypen, L.M.K. (author)We demonstrate coherent driving of a single electron spin using second-harmonic excitation in a Si/SiGe quantum dot. Our estimates suggest that the anharmonic dot confining potential combined with a gradient in the transverse magnetic field dominates the second-harmonic response. As expected, the Rabi frequency depends quadratically on the...journal article 2015
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Overweg, H.C. (author), Den Haan, A.M.J. (author), Eerkens, H.J. (author), Alkemade, P.F.A. (author), La Rooij, A.L. (author), Spreeuw, R.J.C. (author), Bossoni, L. (author), Oosterkamp, T.H. (author)We investigate the degradation of the magnetic moment of a 300?nm thick FePt film induced by Focused Ion Beam (FIB) milling. A 1??m?×?8??m rod is milled out of a film by a FIB process and is attached to a cantilever by electron beam induced deposition. Its magnetic moment is determined by frequency-shift cantilever magnetometry. We find that the...journal article 2015
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Allen, C.S. (author), Liberti, E. (author), Kim, J.S. (author), Xu, Q. (author), Fan, Y. (author), He, K. (author), Robertson, A.W. (author), Zandbergen, H.W. (author), Warner, J.H. (author), Kirkland, A.I. (author)We have measured the mean square amplitude of both in- and out-of-plane lattice vibrations for mono-layer graphene at temperatures ranging from ?100 K to 1300?K. The amplitude of lattice vibrations was calculated from data extracted from selected area electron diffraction patterns recorded across a known temperature range with over 80...journal article 2015
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Houri, S. (author), Geuze, M.J. (author), Venstra, W.J. (author)We demonstrate thermo-mechanical relaxation oscillations in a strongly driven quartz crystal. Dynamic bifurcation leads to two stable oscillation states with a distinct electrical impedance. Slow Joule-heating, which shifts the susceptibility of the crystal, provides a feedback that leads to thermally induced oscillations in which the amplitude...journal article 2015
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Whiting, N. (author), Hu, J. (author), Shah, J.V. (author), Cassidy, M.C. (author), Cressman, E. (author), Millward, N.Z. (author), Menter, D.G. (author), Marcus, C.M. (author), Bhattacharya, P.K. (author)Visualizing the movement of angiocatheters during endovascular interventions is typically accomplished using x-ray fluoroscopy. There are many potential advantages to developing magnetic resonance imaging-based approaches that will allow three-dimensional imaging of the tissue/vasculature interface while monitoring other physiologically-relevant...journal article 2015
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Nishiguchi, K. (author), Castellanos-Gomez, A. (author), Yamaguchi, H. (author), Fujiwara, A. (author), Van der Zant, H.S.J. (author), Steele, G.A. (author)We demonstrate a tunnel diode composed of a vertical MoS2/SiO2/Si heterostructure. A MoS2 flake consisting four areas of different thicknesses functions as a gate terminal of a silicon field-effect transistor. A thin gate oxide allows tunneling current to flow between the n-type MoS2 layers and p-type Si channel. The tunneling-current...journal article 2015
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Frisenda, R. (author), Parlato, L. (author), Barra, M. (author), Van der Zant, H.S.J. (author), Cassinese, A. (author)In this letter, we report the single-molecule conductance properties of a cyano-functionalized perylene-diimide derivative (PDI8-CN 2 ) investigated with gold nano-electrodes. This molecule is of large interest for the fabrication of high-performance and air-stable n-type organic field-effect transistors. Low-bias experiments performed on...journal article 2015
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Laird, E.A. (author), Kuemmeth, F. (author), Steele, G.A. (author), Grove-Rasmussen, K. (author), Nygard, J. (author), Flensberg, K. (author), Kouwenhoven, L.P. (author)Carbon nanotubes are a versatile material in which many aspects of condensed matter physics come together. Recent discoveries have uncovered new phenomena that completely change our understanding of transport in these devices, especially the role of the spin and valley degrees of freedom. This review describes the modern understanding of...journal article 2015
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Cartamil Bueno, S.J. (author), Steeneken, P.G. (author), Tichelaar, F.D. (author), Navarro Moratalla, E. (author), Venstra, W.J. (author), Leeuwen, R. (author), Coronado, E. (author), Van der Zant, H.S.J. (author), Steele, G.A. (author), Castellanos-Gomez, A. (author)Controlling the strain in two-dimensional (2D) materials is an interesting avenue to tailor the mechanical properties of nanoelectromechanical systems. Here, we demonstrate a technique to fabricate ultrathin tantalum oxide nanomechanical resonators with large stress by the laser oxidation of nano-drumhead resonators composed of tantalum...journal article 2015
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Standing, A. (author), Assali, S. (author), Gao, L. (author), Verheijen, M.A. (author), Van Dam, D. (author), Cui, Y. (author), Notten, P.H.L. (author), Haverkort, J.E.M. (author), Bakkers, E.P.A.M. (author)Photoelectrochemical hydrogen production from solar energy and water offers a clean and sustainable fuel option for the future. Planar III/V material systems have shown the highest efficiencies, but are expensive. By moving to the nanowire regime the demand on material quantity is reduced, and new materials can be uncovered, such as wurtzite...journal article 2015