Researchers from AMO GmbH, Oxford Instruments, Cambridge University, RWTH Aachen University and the University of Wuppertal have demonstrated a new method to use PEALD on graphene without introducing defects into the graphene itself.Continue reading “A clever way of protecting graphene”
A collaboration between the groups of Benoit Hackens at UC Louvain and of Christoph Stampfer at RWTH Aachen University solves the puzzle of the fragility of the quantum Hall effect in graphene.
The quantum Hall effect is both a textbook example of topological protection and a central tool of metrology labs. In graphene, the quantum Hall effect can be observed at much higher temperatures than in high mobility semiconductors, but the topological protection turned out to be regrettably less robust.
Using scanning gate microscopy on samples fabricated in the lab of Christoph Stampfer, the team of Benoit Hackens has now been able to pinpoint the cause of the vulnerability of the graphene quantum Hall channels. The results clearly indicate the detrimental role of antidots along the graphene edges and provide insights on how to counteract their influence.
A nice popular account of the work published by UCLouvain can be read here.
Upstream modes and antidots poison graphene quantum Hall effect
N. Moreau, B. Brun, S. Somanchi, , K. Watanabe, T. Taniguchi, C. Stampfer & B. Hackens
Nature Communications 12, 4265 (2021).
This summer, the Aachen Graphene & 2D Materials Center will welcome two new international visiting-researchers.Continue reading “Two new visiting-researchers at the Aachen Graphene & 2D Materials Center”
AMO GmbH and RWTH Aachen University are partner of 2Exciting, an Innovative Training Network funded by the Marie Skłodowska-Curie Actions with the goal of raising a new generation of experts in the field of 2D semiconductors.Continue reading “2Exciting – training the next generation of experts in 2D semiconductors technologies”
In the newly funded project ACOMAT, AMO GmbH and partners will exploit the unique optoelectronic properties of two-dimensional materials for transforming CO2 into solar fuels.Continue reading “ACOMAT – Harnessing 2D materials for photocatalysis”
This summer Semester, Prof. Christoph Stampfer will give a lecture on the “Physics of graphene and 2D materials”.Continue reading “Lecture on the “Physics of Graphene and 2D Materials””
In a video interview for the Faculty of Electrical Engineering and Information Technology of RWTH Aachen University, Prof. Max Lemme explains the vision behind the Future-Cluster NeuroSys, the role of neuromorphic hardware in shaping the future of artificial intelligence applications, and the necessity of addressing not only the technical aspects, but also the socio-economic implications of this new technology, to ensure that it conforms “by design” with European values.Continue reading “What should the future look like? – An interview with Max Lemme over the Future-Cluster NeuroSys”
Substantial advances in the technology for confining and manipulating electrons in bilayer graphene quantum dots bring the demonstration of graphene-based qubits within reach.Continue reading “Steady progress towards graphene-based qubits”
AMO GmbH is partner of GreEnergy, a new project funded by the European Commission through the Horizon 2020 Programme, which aims at developing optical nano-antennas as cost-effective solar energy harvester for a greener future.Continue reading “GreEnergy: setting a new paradigm for solar energy harvesting”
Two-dimensional (2D) materials have a huge potential for providing devices with much smaller size and extended functionalities with respect to what can be achieved with today’s silicon technologies. But to exploit this potential we must be able to integrate 2D materials into semiconductor manufacturing lines – a notoriously difficult step. A team of researchers from Sweden and Germany now reports a new method to make this work.Continue reading “A scalable method for the large-area integration of 2D materials”