Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Leiden Observatory3.6k papers
- Centre National de la Recherche ScientifiqueFR2.4k papers
- Max Planck Institute for AstronomyDE1.4k papers
- European Southern ObservatoryCL1.4k papers
- Max Planck Institute for Extraterrestrial PhysicsDE1.3k papers
- California Institute of TechnologyUS1.1k papers
- University of GroningenNL1.1k papers
- Center for Astrophysics Harvard & SmithsonianUS1k papers
- Royal ObservatoryGB942 papers
- University of AmsterdamNL941 papers
- University College LondonGB886 papers
- University of CambridgeGB870 papers
20 papers · 2 filters
The Berry phase of dislocations in graphene and valley conserving decoherence
Andrej Mesaros, Darius Sadri, Jan Zaanen
We demonstrate that dislocations in the graphene lattice give rise to electron Berry phases equivalent to quantized values {0,1/3,-1/3} in units of the flux quantum, but with an op…
Finite difference method for transport properties of massless Dirac fermions
J. Tworzydlo, C. W. Groth, C. W. J. Beenakker
We adapt a finite difference method of solution of the two-dimensional massless Dirac equation, developed in the context of lattice gauge theory, to the calculation of electrical c…
Stabilizing single atom contacts by molecular bridge formation
Everardus H. Huisman, Marius L. Trouwborst, Frank L. Bakker +3
Gold-molecule-gold junctions can be formed by carefully breaking a gold wire in a solution containing dithiolated molecules. Surprisingly, there is little understanding on the mech…
Bound states and magnetic field-induced valley splitting in gate-tunable graphene quantum dots
Patrik Recher, Johan Nilsson, Guido Burkard +1
The magnetic field dependence of energy levels in gapped single- and bilayer graphene quantum dots (QDs) defined by electrostatic gates is studied analytically in terms of the Dira…
The molecular signature of highly conductive metal-molecule-metal junctions
O. Tal, M. Kiguchi, W. H. A. Thijssen +4
The simplicity of single-molecule junctions based on direct bonding of a small molecule between two metallic electrodes make them an ideal system for the study of fundamental quest…
Extinction of coherent backscattering by a disordered photonic crystal with a Dirac spectrum
R. A. Sepkhanov, A. Ossipov, C. W. J. Beenakker
Photonic crystals with a two-dimensional triangular lattice have a conical singularity in the spectrum. Close to this so-called Dirac point, Maxwell's equations reduce to the Dirac…
Influence of a single defect on the conductance of a tunnel point contact between a normal metal and a superconductor
Ye. S. Avotina, Yu. A. Kolesnichenko, J. M. van Ruitenbeek
We have investigated theoretically the conductance of a Normal-Superconductor point-contact in the tunnel limit and analyzed the quantum interference effects originating from the s…
Splitting of a Cooper pair by a pair of Majorana bound states
Johan Nilsson, A. R. Akhmerov, C. W. J. Beenakker
Majorana bound states are spatially localized superpositions of electron and hole excitations in the middle of a superconducting energy gap. A single qubit can be encoded nonlocall…
f-Sum Rule and Unconventional Spectral Weight Transfer in Graphene
J. Sabio, J. Nilsson, A. H. Castro Neto
We derive and analyze the f-sum rule for a two-dimensional (2D) system of interacting electrons whose behavior is described by the Dirac equation. We apply the sum rule to analyze…
A proof of the Kramers degeneracy of transmission eigenvalues from antisymmetry of the scattering matrix
J. H. Bardarson
In time reversal symmetric systems with half integral spins (or more concretely, systems with an antiunitary symmetry that squares to -1 and commutes with the Hamiltonian) the tran…
Effect of gauge-field interaction on fermion transport in 2D: Hartree conductivity correction and dephasing
T. Ludwig, I. V. Gornyi, A. D. Mirlin +1
We consider the quantum corrections to the conductivity of fermions interacting via a Chern-Simons gauge field, and concentrate on the Hartree-type contributions. The first-order H…
Electronic shot noise in fractal conductors
C. W. Groth, J. Tworzydlo, C. W. J. Beenakker
By solving a master equation in the Sierpinski lattice and in a planar random-resistor network, we determine the scaling with size L of the shot noise power P due to elastic scatte…
Highly conductive molecular junctions based on direct binding of benzene to platinum electrodes
M. Kiguchi, O. Tal, S. Wohlthat +5
Highly conductive molecular junctions were formed by direct binding of benzene molecules between two Pt electrodes. Measurements of conductance, isotopic shift in inelastic spectro…
Calculation of the conductance of a graphene sheet using the Chalker-Coddington network model
I. Snyman, J. Tworzydlo, C. W. J. Beenakker
The Chalker-Coddington network model (introduced originally as a model for percolation in the quantum Hall effect) is known to map onto the two-dimensional Dirac equation. Here we…
Single atom adhesion in optimized gold nanojunctions
M. L. Trouwborst, E. H. Huisman, F. L. Bakker +2
We study the interaction between single apex atoms in a metallic contact, using the break junction geometry. By carefully 'training' our samples, we create stable junctions in whic…
Lithographic mechanical break junctions for single-molecule measurements in vacuum: possibilities and limitations
C. A. Martin, D. Ding, H. S. J. van der Zant +1
We have investigated electrical transport through the molecular model systems benzenedithiol, benzenediamine, hexanedithiol and hexanediamine. Conductance histograms under differen…
The signature of subsurface Kondo impurities in the local tunnel current
Ye. S. Avotina, Yu. A. Kolesnichenko, J. M. van Ruitenbeek
The conductance of a tunnel point-contact in an STM-like geometry having a single defect placed below the surface is investigated theoretically. The effect of multiple electron sca…
Electronic properties of bilayer and multilayer graphene
Johan Nilsson, A. H. Castro Neto, F. Guinea +1
We study the effects of site dilution disorder on the electronic properties in graphene multilayers, in particular the bilayer and the infinite stack. The simplicity of the model a…
Electron-vibration interaction in single-molecule junctions: from contact to tunneling regime
O. Tal, M. Krieger, B. Leerink +1
Point contact spectroscopy on a H2O molecule bridging Pt electrodes reveals a clear crossover between enhancement and reduction of the conductance due to electron-vibration interac…
The Keldysh action of a multi-terminal time-dependent scatterer
I. Snyman, Y. V. Nazarov
We present a derivation of the Keldysh action of a general multi-channel time-dependent scatterer in the context of the Landauer-Büttiker approach. The action is a convenient build…