458 citations · 2.2k across the 26 of their papers we have counts for
24 papers · 1 filter
Temperature-induced phase transitions in the quantum Hall magnet of bilayer graphene
Miuko Tanaka, Kenji Watanabe, Takashi Taniguchi +3
The quantum Hall system can be used to study many-body physics owing to its multiple internal electronic degrees of freedom and tunability. While quantum phase transitions have bee…
Heat-Driven Electron-Motion in a Nanoscale Electronic Circuit
Shintaro Takada, Giorgos Georgiou, Everton Arrighi +8
We study the interaction between two closely spaced but electrically isolated quasi-one-dimensional electrical wires by a drag experiment. In this work we experimentally demonstrat…
Observation of the Kondo Screening Cloud of Micron Lengths
I. V. Borzenets, J. Shim, J. Chen +5
When a magnetic impurity exists in a metal, conduction electrons form a spin cloud that screens the impurity spin. This basic phenomenon is called the Kondo effect. Contrary to ele…
Spin-valley Hall transport induced by spontaneous symmetry breaking in half-filled zero Landau level of bilayer graphene
Miuko Tanaka, Yuya Shimazaki, Ivan Valerievich Borzenets +4
Intrinsic Hall conductivity, emerging when chiral symmetry is broken, is at the heart of future low energy consumption devices because it can generate non-dissipative charge neutra…
Supercurrent in Graphene Josephson Junctions with Narrow Trenches in the Quantum Hall Regime
Andrew Seredinski, Anne Draelos, Ming-Tso Wei +12
Coupling superconductors to quantum Hall edge states is the subject of intense investigation as part of the ongoing search for non-abelian excitations. Our group has previously obs…
Investigation of Supercurrent in the Quantum Hall Regime in Graphene Josephson Junctions
Anne W. Draelos, Ming Tso Wei, Andrew Seredinski +10
In this study, we examine multiple encapsulated graphene Josephson junctions to determine which mechanisms may be responsible for the supercurrent observed in the quantum Hall (QH)…
Non-universal transmission phase behaviour of a large quantum dot
H. Edlbauer, S. Takada, G. Roussely +6
The electron wave function experiences a phase modification at coherent transmission through a quantum dot. This transmission phase undergoes a characteristic shift of when sca…
Electrical control of a solid-state flying qubit
Michihisa Yamamoto, Shintaro Takada, Christopher Bäuerle +3
Solid-state approaches to quantum information technology are attractive because they are scalable. The coherent transport of quantum information over large distances, as required f…
Landau level evolution driven by band hybridization in mirror symmetry broken ABA-stacked trilayer graphene
Yuya Shimazaki, Toru Yoshizawa, Ivan V. Borzenets +7
Layer stacking and crystal lattice symmetry play important roles in the band structure and the Landau levels of multilayer graphene. ABA-stacked trilayer graphene possesses mirror-…
Critical current scaling in long diffusive graphene-based Josephson junctions
Chung-Ting Ke, Ivan V. Borzenets, Anne W. Draelos +8
We present transport measurements on long diffusive graphene-based Josephson junctions. Several junctions are made on a single-domain crystal of CVD graphene and feature the same c…
Injection of a single electron from static to moving quantum dots
Benoit Bertrand, Sylvain Hermelin, Pierre-André Mortemousque +7
We study the injection mechanism of a single electron from a static quantum dot into a moving quantum dot created in a long depleted channel with surface acoustic waves (SAWs). We…
Fast spin information transfer between distant quantum dots using individual electrons
B. Bertrand, S. Hermelin, S. Takada +6
Transporting ensembles of electrons over long distances without losing their spin polarization is an important benchmark for spintronic devices. It requires usually to inject and t…
High Efficiency CVD Graphene-lead (Pb) Cooper Pair Splitter
I. V. Borzenets, Y. Shimazaki, G. F. Jones +4
We demonstrate high efficiency Cooper pair splitting in a graphene-based device. We utilize a true Y-shape design effectively placing the splitting channels closer together: graphe…
Generation and detection of pure valley current by electrically induced Berry curvature in bilayer graphene
Yuya Shimazaki, Michihisa Yamamoto, Ivan V. Borzenets +3
Valley is a useful degree of freedom for non-dissipative electronics since valley current that can flow even in an insulating material does not accompany electronic current. We use…
Quantum manipulation of two-electron spin states in metastable double quantum dots
Benoit Bertrand, Hanno Flentje, Shintaro Takada +6
We studied experimentally the dynamics of the exchange interaction between two antiparallel electron spins in a so-called metastable double quantum dot where coupling to the electr…
Aharonov-Bohm interferometry with a tunnel-coupled wire
A. Aharony, S. Takada, O. Entin-Wohlman +2
Recent experiments [M. Yamamoto et al., Nature Nanotechnology 7, 247 (2012)] used the transport of electrons through an Aharonov-Bohm interferometer and two coupled channels (at bo…
Theoretical, numerical, and experimental study of a flying qubit electronic interferometer
Tobias Bautze, Christoph Süssmeier, Shintaro Takada +6
We discuss an electronic interferometer recently measured by Yamamoto et al. This "flying quantum bit" experiment showed quantum oscillations between electronic trajectories of two…
Transmission Phase in the Kondo Regime Revealed in a Two-Path Interferometer
S. Takada, C. Bäuerle, M. Yamamoto +9
We report on the direct observation of the transmission phase shift through a Kondo correlated quantum dot by employing a new type of two-path interferometer. We observed a clear $…
Gate tunable non-linear currents in bilayer graphene diodes
Hiroki Shioya, Michihisa Yamamoto, Saverio Russo +2
Electric transport of double gated bilayer graphene devices is studied as a function of charge density and bandgap. A top gate electrode can be used to control locally the Fermi le…
Electrons surfing on a sound wave as a platform for quantum optics with flying electrons
Sylvain Hermelin, Shintaro Takada, Michihisa Yamamoto +5
Electrons in a metal are indistinguishable particles that strongly interact with other electrons and their environment. Isolating and detecting a single flying electron after propa…
Stacking-order dependent transport properties of trilayer graphene
S. H. Jhang, M. F. Craciun, S. Schmidmeier +8
We report markedly different transport properties of ABA- and ABC-stacked trilayer graphenes. Our experiments in double-gated trilayer devices provide evidence that a perpendicular…
Tuneable electronic properties in graphene
M. F. Craciun, S. Russo, M. Yamamoto +1
Novel materials are in great demand for future applications. The discovery of graphene, a one atom thick carbon layer, holds the promise for unique device architectures and functio…
Contact resistance in graphene-based devices
S. Russo, M. F. Craciun, M. Yamamoto +2
We report a systematic study of the contact resistance present at the interface between a metal (Ti) and graphene layers of different, known thickness. By comparing devices fabrica…
Noise Correlations in a Coulomb Blockaded Quantum Dot
Y. Zhang, L. DiCarlo, D. T. McClure +5
We report measurements of current noise auto- and cross-correlation in a tunable quantum dot with two or three leads. As the Coulomb blockade is lifted at finite source-drain bias,…