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- Scarlino, P. (author) doctoral thesis 2016
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Frisenda, R. (author)In this dissertation, charge-transport through individual organic molecules is investigated. The single molecules are contacted with two-terminal mechanically controllable break junction gold electrodes and their electrical and mechanical behavior studied at room and low temperature.doctoral thesis 2016
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Wiedenmann, J. (author), Bocquillon, E. (author), Deacon, R.S. (author), Hartinger, S. (author), Hermann, O. (author), Klapwijk, T.M. (author), Maier, L. (author), Ames, C. (author), Brüne, C. (author), Gould, C. (author), Oiwa, A. (author), Ishibashi, K. (author), Tarucha, S. (author), Buhmann, H. (author), Molenkamp, L.W. (author)The Josephson effect describes the generic appearance of a supercurrent in a weak link between two superconductors. Its exact physical nature deeply influences the properties of the supercurrent. In recent years, considerable efforts have focused on the coupling of superconductors to the surface states of a three-dimensional topological...journal article 2016
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Island, J.O. (author), Kuc, A. (author), Diependaal, E.H. (author), Bratschitsch, R. (author), Van der Zant, H.S.J. (author), Heine, T. (author), Castellanos-Gomez, A. (author)We present photoluminescence (PL) spectroscopy measurements of single-layer MoSe2 as a function of uniform uniaxial strain. A simple clamping and bending method is described that allows for application of uniaxial strain to layered, 2D materials with strains up to 1.1% without slippage. Using this technique, we find that the electronic band gap...journal article 2016
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Esin, I. (author), Romito, A. (author), Blanter, I.M. (author), Gefen, Y. (author)Measurements with variable system–detector interaction strength, ranging from weak to strong, have been recently reported in a number of electronic nanosystems. In several such instances many-body effects play a significant role. Here we consider the weak-to-strong crossover for a setup consisting of an electronic Mach–Zehnder interferometer,...journal article 2016
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Bouwes Bavinck, M.H. (author)In the future world of quantum communication and computing, infomation cannot be hacked and computers solve difficult problems, such as factorizing large number or searching in a large databases, much faster than possible with ordinary computers. However, to realize such systems still much research is needed. One of the systems that has gained a...doctoral thesis 2016
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Liu, X.X. (author), Hayton, D.J. (author), Luo, Y.C. (author), Wei, L. (author), Vercruyssen, N. (author), Gao, J.R. (author), Groppi, C. (author)We report on realization of a 2 × 2 NbN hot electron bolometer (HEB) array receiver using multiple local oscillator (LO) beams that are obtained from a Fourier phase grating mirror. The grating splits a 1.4 THz single beam into four uniform sub-beams. Two 50mm lenses are applied to collimate each beam in order to achieve a spacing of 12mm...conference paper 2015
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Lissau, H. (author), Frisenda, R. (author), Olsen, S.T. (author), Jevric, M. (author), Parker, C.R. (author), Kadziola, A. (author), Hansen, T. (author), Van der Zant, H.S.J. (author), Brondsted Nielsen, M. (author), Mikkelsen, K.V. (author)The ability of molecules to change colour on account of changes in solvent polarity is known as solvatochromism and used spectroscopically to characterize charge-transfer transitions in donor–acceptor molecules. Here we report that donor–acceptor-substituted molecular wires also exhibit distinct properties in single-molecule electronics under...journal article 2015
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Yuan, M. (author), Singh, V. (author), Blanter, I.M. (author), Steele, G.A. (author)In cavity optomechanics, light is used to control mechanical motion. A central goal of the field is achieving single-photon strong coupling, which would enable the creation of quantum superposition states of motion. Reaching this limit requires significant improvements in optomechanical coupling and cavity coherence. Here we introduce an...journal article 2015
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Manca, N. (author), Kanki, T. (author), Tanaka, H. (author), Marré, D. (author), Pellegrino, L. (author)We investigate the resistive switching behaviour of VO2 microbridges under current bias as a function of temperature and thermal coupling with the heat bath. Upon increasing the electrical current bias, the formation of the metallic phase can progress smoothly or through sharp jumps. The magnitude and threshold current values of these sharp...journal article 2015
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Diez, M. (author), Rincon Vieira Lugarinho Monte, A.M. (author), Mattoni, G. (author), Cobanera, E. (author), Hyart, T. (author), Mulazimoglu, E. (author), Bovenzi, N. (author), Beenakker, C.W.J. (author), Caviglia, A. (author)The LaAlO3=SrTiO3 interface hosts a two-dimensional electron system that is unusually sensitive to the application of an in-plane magnetic field. Low-temperature experiments have revealed a giant negative magnetoresistance (dropping by 70%), attributed to a magnetic-field induced transition between interacting phases of conduction electrons with...journal article 2015
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Shcherbatenko, M. (author), Lobanov, Y. (author), Benderov, O. (author), Shurakov, A. (author), Ignatov, A. (author), Titova, N. (author), Finkel, M. (author), Maslennikov, S. (author), Kaurova, N. (author), Voronov, B.M. (author), Rodin, A. (author), Klapwijk, T.M. (author), Gol'tsman, G.N. (author)We report on design and characterization of a superconducting Hot Electron Bolometer Mixer integrated with a logarithmic spiral antenna for mid-IR range observations. The antenna parameters have been adjusted to achieve the ultimate performance at 10 ?m (30 THz) range where O3, NH3, CO2, CH4, N2O, . lines in the Earth’s atmosphere, in planetary...conference paper 2015
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Shevchuk, O. (author), Singh, V. (author), Steele, G.A. (author), Blanter, Y.M. (author)We investigate theoretically in detail the nonlinear effects in the response of an optical/microwave cavity coupled to a Duffing mechanical resonator. The cavity is driven by a laser at a red or blue mechanical subband, and a probe laser measures the reflection close to the cavity resonance. Under these conditions, we find that the cavity...journal article 2015
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Yuan, M. (author), Cohen, M.A. (author), Steele, G.A. (author)We study the mechanical dissipation of the fundamental mode of millimeter-sized, high quality-factor (Q) metalized silicon nitride membranes at temperatures down to 14?mK using a three-dimensional optomechanical cavity. Below 200?mK, high-Q modes of the membranes show a diverging increase of Q with decreasing temperature, reaching Q=1.27×108Q=1...journal article 2015
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Frisenda, R. (author), Perrin, M.L. (author), Van der Zant, H.S.J. (author)We study single-molecule oligo(phenylene ethynylene)dithiol junctions by means of inelastic electron tunneling spectroscopy (IETS). The molecule is contacted with gold nano-electrodes formed with the mechanically controllable break junction technique. We record the IETS spectrum of the molecule from direct current measurements, both as a...journal article 2015
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Agundez, R.R. (author)In this thesis we study quantum transport in several one-dimensional systems with strong electronic interactions. The first chapter contains an introduction to the concepts treated throughout this thesis, such as the Aharonov-Bohm effect, the Kondo effect, the Fano effect and quantum state transfer. It also includes a brief historical...doctoral thesis 2015
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Aqeel, A. (author), Vlietstra, N. (author), Heuver, J.A. (author), Bauer, G.E.W. (author), Noheda, B. (author), Van Wees, B.J. (author), Palstra, T.T.M. (author)We report on the spin-Hall magnetoresistance (SMR) and spin Seebeck effect (SSE) in multiferroic CoCr2O4 (CCO) spinel thin films with Pt contacts. We observe a large enhancement of both signals below the spin-spiral (Ts=28K) and the spin lock-in (Tlock?in=14K) transitions. The SMR and SSE responses in the spin lock-in phase are one order of...journal article 2015
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Spinelli, A. (author), Gerrits, M. (author), Toskovic, R. (author), Bryant, B. (author), Ternes, M. (author), Otte, A.F. (author)A system of two exchange-coupled Kondo impurities in a magnetic field gives rise to a rich phase space hosting a multitude of correlated phenomena. Magnetic atoms on surfaces probed through scanning tunnelling microscopy provide an excellent platform to investigate coupled impurities, but typical high Kondo temperatures prevent field-dependent...journal article 2015
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Nanda, G. (author), Van Veldhoven, E. (author), Maas, D. (author), Sadeghian, H. (author), Alkemade, P.F.A. (author)The authors report the direct-write growth of hammerhead atomic force microscope(AFM) probes by He+beam induced deposition of platinum-carbon. In order to grow a thin nanoneedle on top of a conventional AFM probe, the authors move a focused He+beam during exposure to a PtC precursor gas. In the final growth stage, a perpendicular movement of the...journal article 2015
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Padurariu, C. (author), Jonkcheere, T. (author), Melin, R. (author), Feinberg, D. (author), Martin, T. (author), Nazarov, Y.V. (author)We describe the proximity effect in a short disordered metallic junction between three superconducting leads. Andreev bound states in the multiterminal junction may cross the Fermi level. We reveal that for a quasicontinuous metallic density of states, crossings at the Fermi level manifest as a closing of the proximity-induced gap. We calculate...journal article 2015