Federica Haupt – Page 4 – Aachen Graphene & 2D Materials Center

4. February 202218. February 2022

Perspective article in Science by Markus Morgenstern and Mark Goerbig.

Following the recent progresses made by the Yazdani group in visualizing broken symmetries and topological states caused by the interaction between electrons in graphene under high magnetic field [1], Markus Morgenstern and Mark Goerbig have released Perspective article in Science [2], where they review in a very accessible language the basic physics beyond the observed effects.

[1] Visualizing broken symmetry and topological defects in a quantum Hall ferromagnet
X. Liu, G. Farahi, C.-L.Chiu, Z. Papic, K. Watanabe, T. Taniguchi, M. P. Zaletel, and A. Yazdani
Science 375, 321 (2021). DOI: 10.1126/science.abm3770

[2] Many-particle electron states in graphene
M. Morgenstern and M. Goerbig
Science 375, 263 (2022). DOI: 10.1126/science.abn2049

26. January 202218. February 2022

Progress towards flexible, low-power transceivers based on MoS2

Scientists from RWTH Aachen University, AMO GmbH, EPFL and Aixtron SE have demonstrated the first power detectors based on Molybdenum disulphide (MoS₂) that operate at zero bias. The fabricated circuits function in Ku-band between 12 and 18GHz, and are the best-performing power detectors fabricated on flexible substrate reported to date. Their dynamic range exceeds 30dB, outperforming other semiconductor technologies, like silicon complementary metal oxide semiconductor (CMOS) circuits and GaAs Schottky diodes.

24. January 202218. February 2022

An extensive review on graphene-based microwave circuits

Mohamed Saeed and co-workers have published an extensive review article on graphene-based microwave circuits in the journal Advanced Materials.

7. January 202218. February 2022

Prof. Sven Ingebrandt joins the Aachen Graphene & 2D Materials Center

The Aachen Graphene & 2D Materials center has gained a new member: Prof. Sven Ingebrandt, head of the Chair for Micro- and Nanosystems and of the Institute of Materials in Electrical Engineering 1 (IWE 1) at RWTH Aachen University.

30. November 2021

Omnipresence of viscous flow in graphene devices

Imaging the complex streaming patterns of electron flow in graphene field-effect transistors, researchers from RWTH Aachen University and AMO GmbH have found evidence for local spots of viscous electron flow even at room temperature in devices with moderate mobility, implying that viscous electron flow is omnipresent in graphene devices. The results have been reported in Nano Letters.

12. November 202114. November 2021

November Workshop of the Aachen Graphene & 2D Materials Center at SuperC

On November 15-16, 2021, the members of the Aachen Graphene & 2D Materials Center will meet up for an internal workshop, where each group will present and discuss its current research questions and latest results.

8. November 2021

Welcome to Ms. Babita Negi

The Aachen Graphene & 2D Materials Center welcomes a new master student from India, Ms. Babita Negi, from the Indian Institute of Technology, Kharagpur.

12. October 2021

A new Erasmus+ fellow joins the Center

The Aachen Graphene & 2D Materials Center welcomes Aniello Pelella, who has just joined the Chair for Electronic devices with an Erasmus+ Traineeship.

1. October 2021

A new paradigm of THz-energy harvester based on graphene

Future-shaping concepts such as wearable electronics and the Internet of Things are driving the quest for low-power electronics and for energy harvesting at the device or at chip level. Researchers from AMO GmbH, RWTH Aachen University, Chalmers University and the University of Wuppertal have now developed a novel type of flexible energy harvester, which shows good prospects for powering wearable and conformal devices.

28. September 202127. September 2021

An accurate measurement of the spin-orbit coupling in single-electron bilayer graphene quantum dots

For applications in spin-based electronics and quantum computation, it is crucial to understand quantitively how the electron spin is coupled to the orbital degrees of freedom. In bilayer graphene this is a notoriously difficult task, given the tiny size of the energy scales involved. Researchers from RWTH Aachen University have now managed to accurately measure the spin-orbit coupling in single-electron bilayer graphene quantum dots, exploiting the extreme energy sensitivity of a double-dot device. The result has been reported in Nature Communications.