Effect of induced current loss on quality factor of graphene resonators
Source abstract
Abstract
As the important electric loss of a graphene resonator, intrinsic current loss has received increasing attention, but the existing research is limited to qualitative analysis and approximate calculation. Based on the microscopic behavior of carriers, we have accurately established the calculation model of induced current loss, which is in good agreement with the existing experimental results. Compared with the previous models, the model in this work can not only fit the inverse V-shaped Q − Vdc curve well but also be compatible with the V-shaped Q − Vdc curve, which is beyond the reach of the previous models. In addition, the calculation results show that selecting the appropriate gate voltage combination when stimulating the graphene resonator can increase the quality factor by nearly 1–2 orders of magnitude. Furthermore, we reasonably explain the importance of DC gate voltage applied in the experiment compared with the case of non-DC gate voltage. This work realizes the accurate calculation of intrinsic current loss and is of great significance for reducing the intrinsic current loss in the practical application of graphene resonators.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Graphene research and applications · Quantum and electron transport phenomena · Molecular Junctions and Nanostructures
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Advanced Interdisciplinary Studies, National University of Defense Technology 1 , Changsha 410073, China
Shenzhen Institute for Quantum Science and Engineering, Southern University of Science and Technology 2 , Shenzhen 518055, China
International Quantum Academy 3 , Shenzhen 518048, China
College of Intelligence Science and Technology, National University of Defense Technology 4 , Changsha 410073, China
Funding
National Key Research and Development Program of China · The Natural Science Foundation of Hunan Province · National Natural Science Foundation of China
References (29)
Show source-provided references
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