output
19972023
most citedSpatially Resolved Raman Spectroscopy of Single- and Few-Layer Graphene

2.5k citations

Showing 2019 · cond-mat.mes-hallShow all

16 papers · 2 filters

cond-mat.mes-hall2019★ 12 cited

Phonon spectral density in a GaAs/AlGaAs double quantum dot

Andrea Hofmann, Christian Karlewski, Andreas Heimes +6

We study phonon emission in a GaAs/AlGaAs double quantum dot by monitoring the tunneling of a single electron between the two dots. We prepare the system such that a known amount o…

cond-mat.mes-hall2019★ 16 cited

Real-time detection of every Auger recombination in a self-assembled quantum dot

Pia Lochner, Annika Kurzmann, Jens Kerski +6

Auger recombination is a non-radiative process, where the recombination energy of an electron-hole pair is transferred to a third charge carrier. It is a common effect in colloidal…

cond-mat.mes-hall2019★ 64 cited

Gap Opening in Twisted Double Bilayer Graphene by Crystal fields

Peter Rickhaus, Giulia Zheng, Jose L. Lado +12

Crystal fields occur due to a potential difference between chemically different atomic species. In Van-der-Waals heterostructures such fields are naturally present perpendicular to…

cond-mat.mes-hall2019★ 15 cited

Electron-Hole Interference in an Inverted-Band Semiconductor Bilayer

Matija Karalic, Antonio Štrkalj, Michele Masseroni +7

Electron optics in the solid state promises new functionality in electronics through the possibility of realizing micrometer-sized interferometers, lenses, collimators and beam spl…

cond-mat.mes-hall2019★ 22 cited

Fully automated identification of 2D material samples

Eliska Greplova, Carolin Gold, Benedikt Kratochwil +7

Thin nanomaterials are key constituents of modern quantum technologies and materials research. Identifying specimens of these materials with properties required for the development…

cond-mat.mes-hall2019★ 123 cited

Large multi-directional spin-to-charge conversion in low symmetry semimetal MoTe at room temperature

C. K. Safeer, Nerea Ontoso, Josep Ingla-Aynés +11

Efficient and versatile spin-to-charge current conversion is crucial for the development of spintronic applications, which strongly rely on the ability to electrically generate and…

cond-mat.mes-hall2019★ 18 cited

Observation of quantum Hall interferometer phase jumps due to changing quasiparticle number

Marc P. Röösli, Lars Brem, Benedikt Kratochwil +10

We measure the magneto-conductance through a micron-sized quantum dot hosting about 500 electrons in the quantum Hall regime. In the Coulomb blockade, when the island is weakly cou…

cond-mat.mes-hall2019★ 1 cited

Images of a first order spin-reorientation phase transition in a metallic kagome ferromagnet

Kevin Heritage, Ben Bryant, Laura A. Fenner +3

First order phase transitions, where one phase replaces another by virtue of a simple crossing of free energies, are best known between solids, liquids and vapours, but they also o…

cond-mat.mes-hall2019★ 20 cited

A Gate-Defined Quantum Point Contact in an InAs Two-Dimensional Electron Gas

Christopher Mittag, Matija Karalic, Zijin Lei +7

We experimentally study quantized conductance in an electrostatically defined constriction in a high-mobility InAs two-dimensional electron gas. A parallel magnetic field lifts the…

cond-mat.mes-hall2019★ 153 cited

Observation and control of maximal Chern numbers in a chiral topological semimetal

Niels B. M. Schröter, Samuel Stolz, Kaustuv Manna +13

Topological semimetals feature protected nodal band degeneracies characterized by a topological invariant known as the Chern number (C). Nodal band crossings with linear dispersion…

cond-mat.mes-hall2019★ 71 cited

The Electronic Thickness of Graphene

Peter Rickhaus, Ming-Hao Liu, Marcin Kurpas +10

The van-der-Waals stacking technique enables the fabrication of heterostructures, where two conducting layers are atomically close. In this case, the finite layer thickness matters…

cond-mat.mes-hall2019★ 40 cited

Absence of inter-layer tunnel coupling of -valley electrons in bilayer MoS

Riccardo Pisoni, Tim Davatz, Kenji Watanabe +3

In Bernal stacked bilayer graphene interlayer coupling significantly affects the electronic bandstructure compared to monolayer graphene. Here we present magnetotransport experimen…

cond-mat.mes-hall2019★ 119 cited

Nagaoka ferromagnetism observed in a quantum dot plaquette

Juan P. Dehollain, Uditendu Mukhopadhyay, Vincent P. Michal +7

Engineered, highly-controllable quantum systems hold promise as simulators of emergent physics beyond the capabilities of classical computers. An important problem in many-body phy…

cond-mat.mes-hall2019★ 52 cited

Nonlinear optics in the fractional quantum Hall regime

Patrick Knüppel, Sylvain Ravets, Martin Kroner +3

Engineering strong interactions between optical photons is a great challenge for quantum science. Envisioned applications range from the realization of photonic gates for quantum i…

cond-mat.mes-hall2019★ 68 cited

Charge detection in gate-defined bilayer graphene quantum dots

A. Kurzmann, H. Overweg, M. Eich +8

We report on charge detection in electrostatically-defined quantum dot devices in bilayer graphene using an integrated charge detector. The device is fabricated without any etching…

cond-mat.mes-hall2019★ 20 cited

Auger-spectroscopy in quantum Hall edge channels: a possible resolution to the missing energy problem

T. Krähenmann, S. G. Fischer, M. Röösli +6

Quantum Hall edge channels offer an efficient and controllable platform to study quantum transport in one dimension. Such channels are a prospective tool for the efficient transfer…