Electromechanics in graphene
2021. November 02.
How and why does the resistance of a graphene nanostructure change, when placed in a pressure cell?
Researchers of the BME Quantum Electronics group, along with colleagues at ETH Zürich, address this question in their recent experiment. Two bilayer graphene flakes are pushed against each other in a twisted fashion, akin to recent breakthrough experiments discovering superconductivity in similar samples. The team measured the resistance of the nanostructure as function of pressure and temperature; this allowed to infer key features of the electronic band structure as well. The results are publised in Nano Letters.
Bálint Szentpéteri, Peter Rickhaus, Folkert K. de Vries, Albin Márffy, Bálint Fülöp, Endre Tóvári, Kenji Watanabe, Takashi Taniguchi, Andor Kormányos, Szabolcs Csonka, and Péter Makk
Tailoring the Band Structure of Twisted Double Bilayer Graphene with Pressure
Nano Lett. 2021, 21, 20, 8777 (2021)
https://doi.org/10.1021/acs.nanolett.1c03066
![](https://physics.bme.hu/sites/physics.bme.hu/files/TwistedBilayerNanoLetters2021.png)