Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR2.7k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR2.4k papers
- University of Maryland, College ParkUS2.2k papers
- European Organization for Nuclear ResearchCH2.1k papers
- Centro Brasileiro de Pesquisas FísicasBR2.1k papers
- Imperial College LondonGB2.1k papers
- University of ZurichCH2k papers
- Massachusetts Institute of TechnologyUS2k papers
- Rutherford Appleton LaboratoryGB2k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR1.9k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di BolognaIT1.9k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma IIT1.9k papers
31 papers · 2 filters
Effective spin theories for edge magnetism in graphene zigzag ribbons
Cornelie Koop, Manuel J. Schmidt
We report a thorough study of the reducibility of edge correlation effects in graphene to much-simplified effective models for the edge states. The latter have been used before in…
Contact-induced charge contributions to non-local spin transport measurements in Co/MgO/graphene devices
F. Volmer, M. Drögeler, T. Pohlmann +3
Recently, it has been shown that oxide barriers in graphene-based non-local spin-valve structures can be the bottleneck for spin transport. The barriers may cause spin dephasing du…
Characterization of S-T Transition Dynamics via Correlation Measurements
Christian Dickel, Sandra Foletti, Vladimir Umansky +1
Nuclear spins are an important source of dephasing for electron spin qubits in GaAs quantum dots. Most studies of their dynamics have focused on the relatively slow longitudinal po…
Charge-noise tolerant exchange gates of singlet-triplet qubits in asymmetric double quantum dots
Tuukka Hiltunen, Hendrik Bluhm, Sebastian Mehl +1
In the semi-conductor double quantum dot singlet-triplet qubit architecture, the decoherence caused by the qubit's charge environment poses a serious obstacle in the way towards la…
Raman spectroscopy on mechanically exfoliated pristine graphene ribbons
B. Terrés, S. Reichardt, C. Neumann +3
We present Raman spectroscopy measurements of non-etched graphene nanoribbons, with widths ranging from 15 to 160 nm, where the D-line intensity is strongly dependent on the polari…
Interference and multi-particle effects in a Mach-Zehnder interferometer with single-particle sources
Guillem Rosselló, Francesca Battista, Michael Moskalets +1
We investigate a Mach-Zehnder interferometer fed by two time-dependently driven single-particle sources, one of them placed in front of the interferometer, the other in the center…
Microwave readout of Majorana qubits
Christoph Ohm, Fabian Hassler
Majorana qubits offer a promising way to store and manipulate quantum information by encoding it into the state of Majorana zero modes. As the information is stored in a topologica…
High-efficiency resonant amplification of weak magnetic fields for single spin magnetometry
Luka Trifunovic, Fabio L. Pedrocchi, Silas Hoffman +3
We demonstrate theoretically that by placing a ferromagnetic particle between a nitrogen-vacancy (NV) magnetometer and a target spin, the magnetometer sensitivity is increased dram…
Two-Qubit Pulse Gate for the Three-Electron Double Quantum Dot Qubit
Sebastian Mehl
The three-electron configuration of gate-defined double quantum dots encodes a promising qubit for quantum information processing. I propose a two-qubit entangling gate using a pul…
Suppression of contact-induced spin dephasing in graphene/MgO/Co spin-valve devices by successive oxygen treatments
F. Volmer, M. Drögeler, E. Maynicke +5
By successive oxygen treatments of graphene non-local spin-valve devices we achieve a gradual increase of the contact resistance area products () of Co/MgO spin injection and…
Inverted Singlet-Triplet Qubit Coded on a Two-Electron Double Quantum Dot
Sebastian Mehl, David P. DiVincenzo
The spin configuration of two electrons confined at a double quantum dot (DQD) encodes the singlet-triplet qubit (STQ). We introduce the inverted STQ (ISTQ) that emerges fr…
Diffractive wave guiding of hot electrons by the Au (111) herringbone reconstruction
F. Libisch, V. Geringer, D. Subramaniam +2
The surface potential of the herringbone reconstruction on Au(111) is known to guide surface-state electrons along the potential channels. Surprisingly, we find by scanning tunneli…
Spintronic magnetic anisotropy
Maciej Misiorny, Michael Hell, Maarten R. Wegewijs
An attractive feature of magnetic adatoms and molecules for nanoscale applications is their superparamagnetism, the preferred alignment of their spin along an easy axis preventing…
Charge fluctuations in nonlinear heat transport
Niklas M. Gergs, Christoph B. M. Hörig, Maarten R. Wegewijs +1
We show that charge fluctuation processes are crucial for the nonlinear heat conductance through an interacting nanostructure, even far from a resonance. We illustrate this for an…
Preferential antiferromagnetic coupling of vacancies in graphene on SiO_2: Electron spin resonance and scanning tunneling spectroscopy
S. Just, S. Zimmermann, V. Kataev +3
Monolayer graphene grown by chemical vapor deposition and transferred to SiO_2 is used to introduce vacancies by Ar^+ ion bombardment at a kinetic energy of 50 eV. The density of d…
Probing Transverse Magnetic Anisotropy by Electronic Transport through a Single-Molecule Magnet
M. Misiorny, E. Burzurí, R. Gaudenzi +6
By means of electronic transport, we study the transverse magnetic anisotropy of an individual Fe single-molecule magnet (SMM) embedded in a three-terminal junction. In particu…
Nanosecond spin lifetimes in single- and few-layer graphene-hBN heterostructures at room temperature
Marc Drögeler, Frank Volmer, Maik Wolter +6
We present a new fabrication method of graphene spin-valve devices which yields enhanced spin and charge transport properties by improving both the electrode-to-graphene and graphe…
Raman spectroscopy as probe of nanometer-scale strain variations in graphene
Christoph Neumann, Sven Reichardt, Pedro Venezuela +9
Confocal Raman spectroscopy is a versatile, non-invasive investigation tool and a major workhorse for graphene characterization. Here we show that the experimentally observed Raman…
Investigations of local electronic transport in InAs nanowires by scanning gate microscopy at helium temperatures
A. A. Zhukov, Ch. Volk, A. Winden +2
In the current paper a set of experiments dedicated to investigations of local electronic transport in undoped InAs nanowires at helium temperatures in the presence of a charged at…
Supersymmetry in the Majorana Cooper-Pair Box
Jascha Ulrich, Inanc Adagideli, Dirk Schuricht +1
Over the years, supersymmetric quantum mechanics has evolved from a toy model of high energy physics to a field of its own. Although various examples of supersymmetric quantum mech…
Mechanics of nanoscale wrinkling of graphene on a non-developable spherical surface
Yanguang Zhou, Yuli Chen, Bin Liu +4
The configuration of graphene (GE) sheet conforming to the spherical surface substrate is studied through theoretical model and molecular simulations. Two basic configurations are…
Energy and power fluctuations in ac-driven coherent conductors
Francesca Battista, Federica Haupt, Janine Splettstoesser
Using a scattering matrix approach we study transport in coherent conductors driven by a time-periodic bias voltage. We investigate the role of electron-like and hole-like excitati…
Kondo model in nonequilibrium: Interplay between voltage, temperature, and crossover from weak to strong coupling
Frank Reininghaus, Mikhail Pletyukhov, Herbert Schoeller
We consider an open quantum system in contact with fermionic metallic reservoirs in a nonequilibrium setup. For the case of spin, orbital or potential fluctuations, we present a sy…
Spin resonance without spin splitting
M. Hell, B. Sothmann, M. Leijnse +2
We predict that a single-level quantum dot without discernible splitting of its spin states develops a spin-precession resonance in charge transport when embedded into a spin valve…