Cited 13 time in
Cited 13 time in
GHz nanomechanical resonator in an ultraclean suspended graphene p-n junction
- GHz nanomechanical resonator in an ultraclean suspended graphene p-n junction
- Jung, Minkyung; Rickhaus, Peter; Zihlmann, Simon; Eichler, Alexander; Makk, Peter; Schonenberger, Christian
- DGIST Authors
- Jung, Minkyung
- Issue Date
- Nanoscale, 11(10), 4355-4361
- Article Type
- Annealing; Ballistics; Graphene; Resonators; Semiconductor junctions; Current annealing; Graphene p-n junctions; Macroscopic sizes; Mechanical resonators; Nanomechanical resonators; Resonance frequencies; Resonance response; Suspended graphene; Graphene devices
- We demonstrate high-frequency mechanical resonators in ballistic graphene p-n junctions. Fully suspended graphene devices with two bottom gates exhibit ballistic bipolar behavior after current annealing. We determine the graphene mass density and built-in tension for different current annealing steps by comparing the measured mechanical resonant response to a simplified membrane model. In a graphene membrane with high built-in tension, but still of macroscopic size with dimensions 3 × 1 μm 2 , a record resonance frequency of 1.17 GHz is observed after the final current annealing step. We further compare the resonance response measured in the unipolar with the one in the bipolar regime. Remarkably, the resonant signals are strongly enhanced in the bipolar regime. © 2019 The Royal Society of Chemistry.
- Royal Society of Chemistry
- Related Researcher
nanoelectronics, quantum transport, quantum physics, qubit, condensed matter physics,
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- Division of Nanotechnology1. Journal Articles
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