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Rout, P.K. (author), Papadopoulos, N. (author), Peñaranda, Fernando (author), Watanabe, Kenji (author), Taniguchi, Takashi (author), Prada, Elsa (author), San-Jose, Pablo (author), Goswami, S. (author)Bilayer graphene encapsulated in tungsten diselenide can host a weak topological phase with pairs of helical edge states. The electrical tunability of this phase makes it an ideal platform to investigate unique topological effects at zero magnetic field, such as topological superconductivity. Here we couple the helical edges of such a...journal article 2024
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Yang, X. (author), Shin, D. (author), Yu, Z. (author), Watanabe, Kenji (author), Taniguchi, Takashi (author), Babenko, Vitaliy (author), Hofmann, Stephan (author), Caneva, S. (author)Fluorescence imaging is an invaluable tool to investigate biomolecular dynamics, mechanics, and interactions in aqueous environments. Two-dimensional materials offer large-area, atomically smooth surfaces for wide-field biomolecule imaging. Despite the success of graphene for on-chip biosensing and biomolecule manipulation, its strong...journal article 2024
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Kedves, Máté (author), Szentpéteri, Bálint (author), Márffy, Albin (author), Tóvári, Endre (author), Papadopoulos, N. (author), Rout, P.K. (author), Watanabe, Kenji (author), Taniguchi, Takashi (author), Goswami, S. (author), Makk, Peter (author)Bilayer graphene (BLG) was recently shown to host a band-inverted phase with unconventional topology emerging from the Ising-type spin-orbit interaction (SOI) induced by the proximity of transition metal dichalcogenides with large intrinsic SOI. Here, we report the stabilization of this band-inverted phase in BLG symmetrically encapsulated in...journal article 2023
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Serati de Brito, Caique (author), Faria Junior, Paulo E. (author), Ghiasi, T.S. (author), Ingla Aynés, J. (author), Rabahi, César Ricardo (author), Cavalini, Camila (author), Mañas Valero, S. (author), Taniguchi, Takashi (author), van der Zant, H.S.J. (author)van der Waals heterostructures composed of two-dimensional (2D) transition metal dichalcogenides and vdW magnetic materials offer an intriguing platform to functionalize valley and excitonic properties in nonmagnetic TMDs. Here, we report magneto photoluminescence (PL) investigations of monolayer (ML) MoSe<sub>2</sub> on the layered A-type...journal article 2023
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Ingla Aynés, J. (author), Rigotti Manesco, A.L. (author), Ghiasi, T.S. (author), Volosheniuk, S. (author), Watanabe, Kenji (author), Taniguchi, Takashi (author), van der Zant, H.S.J. (author)We report multiterminal measurements in a ballistic bilayer graphene (BLG) channel, where multiple spin- and valley-degenerate quantum point contacts (QPCs) are defined by electrostatic gating. By patterning QPCs of different shapes along different crystallographic directions, we study the effect of size quantization and trigonal warping on...journal article 2023
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Cotte, Marine (author), Gonzalez, Victor (author), Vanmeert, Frederik (author), Jiménez, Núria (author), Possenti, Elena (author), Ghirardello, Marta (author), Avranovich Clerici, E. (author), Vivani, Riccardo (author), Taniguchi, Yoko (author), McCarthy, Joanne (author)The European Synchrotron Radiation Facility (ESRF) has recently commissioned the new Extremely Brilliant Source (EBS). The gain in brightness as well as the continuous development of beamline instruments boosts the beamline performances, in particular in terms of accelerated data acquisition. This has motivated the development of new access...journal article 2022
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Rybak, M. (author), Bakx, T. (author), Baselmans, J.J.A. (author), Karatsu, K. (author), Kohno, K. (author), Takekoshi, T. (author), Taniguchi, A. (author), van der werf, P. (author), Endo, A. (author)We present a feasibility study for the high-redshift galaxy part of the Science Verification Campaign with the 220–440 GHz deshima 2.0 integrated superconducting spectrometer on the ASTE telescope. The first version of the deshima 2.0 chip has been recently manufactured and tested in the lab. Based on these realistic performance measurements,...journal article 2022
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Kanehira, T. (author), McAllister, M. L. (author), Draycott, S. (author), Nakashima, T. (author), Taniguchi, N. (author), Ingram, D. M. (author), van den Bremer, T.S. (author), Mutsuda, H. (author)Wave breaking in the ocean affects the height of extreme waves, energy dissipation, and interaction between the atmosphere and upper ocean. Numerical modelling is a critical step in understanding the physics of wave breaking and offers insight that is hard to gain from field data or experiments. High-fidelity numerical modelling of three...journal article 2021
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Haque, Mohammad T. (author), Will, Marco (author), Tomi, Matti (author), Pandey, Preeti (author), Kumar, Manohar (author), Schmidt, F.E. (author), Watanabe, Kenji (author), Taniguchi, Takashi (author), Steele, G.A. (author)We have studied 1/f noise in critical current I<sub>c</sub> in h-BN encapsulated monolayer graphene contacted by NbTiN electrodes. The sample is close to diffusive limit and the switching supercurrent with hysteresis at Dirac point amounts to ≃ 5 nA. The low frequency noise in the superconducting state is measured by tracking the variation in...journal article 2021
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Watari, Daichi (author), Taniguchi, Ittetsu (author), Goverde, Hans (author), Manganiello, P. (author), Shirazi, Elham (author), Catthoor, Francky (author), Onoye, Takao (author)We propose a multi-time scale energy management framework for a smart photovoltaic (PV) system that can calculate optimized schedules for battery operation, power purchases, and appliance usage. A smart PV system is a local energy community that includes several buildings and households equipped with PV panels and batteries. However, due to...journal article 2021
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Papadopoulos, N. (author), Gehring, P. (author), Watanabe, Kenji (author), Taniguchi, Takashi (author), van der Zant, H.S.J. (author), Steele, G.A. (author)In transition metal dichalcogenides, defects have been found to play an important role, affecting doping, spin-valley relaxation dynamics, and assisting in proximity effects of spin-orbit coupling. Here we study localized states in WS2 and how they affect tunneling through van der Waals heterostructures of h-BN/graphene/ WS2/metal. The...journal article 2020
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Caneva, S. (author), Hermans, Matthijs (author), Lee, M. (author), García-Fuente, Amador (author), Watanabe, Kenji (author), Taniguchi, Takashi (author), Dekker, C. (author), Ferrer, Jaime (author), van der Zant, H.S.J. (author), Gehring, P. (author)Graphene quantum dots (QDs) are intensively studied as platforms for the next generation of quantum electronic devices. Fine tuning of the transport properties in monolayer graphene QDs, in particular with respect to the independent modulation of the tunnel barrier transparencies, remains challenging and is typically addressed using...journal article 2020
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Papadopoulos, N. (author), Flores, Eduardo (author), Watanabe, Kenji (author), Taniguchi, Takashi (author), Ares, Jose R. (author), Sanchez, Carlos (author), Ferrer, Isabel J. (author), Castellanos-Gomez, Andres (author), Steele, G.A. (author), van der Zant, H.S.J. (author)We have studied electrical transport as a function of carrier density, temperature and bias in multi-terminal devices consisting of hexagonal boron nitride (h-BN) encapsulated titanium trisulfide (TiS<sub>3</sub>) sheets. Through the encapsulation with h-BN, we observe metallic behavior and high electron mobilities. Below ∼60 K an increase in...journal article 2019
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Papadopoulos, N. (author), Watanabe, Kenji (author), Taniguchi, Takashi (author), van der Zant, H.S.J. (author), Steele, G.A. (author)We present measurements of weak localization on hexagonal boron nitride encapsulated bilayer MoS2. From the analysis we obtain information regarding the phase coherence and the spin diffusion of the electrons. We find that the encapsulation with boron nitride provides higher mobilities in the samples, and the phase coherence shows improvement...journal article 2019
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Kroll, J. (author), Uilhoorn, W. (author), van der Enden, K.L. (author), de Jong, D. (author), Watanabe, K. (author), Taniguchi, T. (author), Goswami, S. (author), Cassidy, M.C. (author), Kouwenhoven, Leo P. (author)Circuit quantum electrodynamics has proven to be a powerful tool to probe mesoscopic effects in hybrid systems and is used in several quantum computing (QC) proposals that require a transmon qubit able to operate in strong magnetic fields. To address this we integrate monolayer graphene Josephson junctions into microwave frequency...journal article 2018
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Schmidt, F.E. (author), Jenkins Sanchez, M.D. (author), Watanabe, Kenji (author), Taniguchi, Takashi (author), Steele, G.A. (author)Josephson junctions (JJ) are a fundamental component of microwave quantum circuits, such as tunable cavities, qubits, and parametric amplifiers. Recently developed encapsulated graphene JJs, with supercurrents extending over micron distance scales, have exciting potential applications as a new building block for quantum circuits. Despite this...journal article 2018
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Allen, Monica T. (author), Shtanko, Oles (author), Fulga, Ion C. (author), Wang, Joel I.J. (author), Nurgaliev, Daniyar (author), Watanabe, Kenji (author), Taniguchi, Takashi (author), Akhmerov, A.R. (author), Jarillo-Herrero, Pablo (author), Levitov, Leonid S. (author), Yacoby, Amir (author)Electron surface states in solids are typically confined to the outermost atomic layers and, due to surface disorder, have negligible impact on electronic transport. Here, we demonstrate a very different behavior for surface states in graphene. We probe the wavelike character of these states by Fabry-Perot (FP) interferometry and find that,...journal article 2017
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Zhang, H. (author), Gül, Önder (author), Conesa Boj, S. (author), Nowak, M.P. (author), Wimmer, M.T. (author), Zuo, K. (author), Mourik, Vincent (author), de Vries, F.K. (author), van Veen, J. (author), de Moor, M.W.A. (author), Bommer, J.D.S. (author), van Woerkom, D.J. (author), Car, Diana (author), Plissard, S.R. (author), Bakkers, E.P.A.M. (author), Quintero Perez, M. (author), Cassidy, M.C. (author), Koelling, Sebastian (author), Goswami, S. (author), Watanabe, Kenji (author), Taniguchi, Takashi (author), Kouwenhoven, Leo P. (author)Semiconductor nanowires have opened new research avenues in quantum transport owing to their confined geometry and electrostatic tunability. They have offered an exceptional testbed for superconductivity, leading to the realization of hybrid systems combining the macroscopic quantum properties of superconductors with the possibility to...journal article 2017
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Nanda, G. (author), Hlawacek, Gregor (author), Goswami, S. (author), Watanabe, Kenji (author), Taniguchi, Takashi (author), Alkemade, P.F.A. (author)We report the etching of and electronic transport in nanoribbons of graphene sandwiched between atomically flat hexagonal boron nitride (h-BN). The etching of ribbons of varying width was achieved with a focused beam of 30 keV He<sup>+</sup> ions. Using in-situ electrical measurements, we established a critical dose of 7000 ions nm<sup>−2<...journal article 2017
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Nanda, G. (author), Aguilera Servin, J.L. (author), Rakyta, P. (author), Kormányos, A. (author), Kleiner, Reinhold (author), Koelle, Dieter (author), Watanabe, K. (author), Taniguchi, T. (author), Vandersypen, L.M.K. (author), Goswami, S. (author)The current-phase relation (CPR) of a Josephson junction (JJ) determines how the supercurrent evolves with the superconducting phase difference across the junction. Knowledge of the CPR is essential in order to understand the response of a JJ to various external parameters. Despite the rising interest in ultraclean encapsulated graphene JJs,...journal article 2017