Tunability of 1/f Noise at Multiple Dirac Cones in hBN Encapsulated Graphene Devices

Nano Letters
Chandan KumarAnindya Das

Abstract

The emergence of multiple Dirac cones in hexagonal boron nitride (hBN)-graphene heterostructures is particularly attractive because it offers potentially better landscape for higher and versatile transport properties than the primary Dirac cone. However, the transport coefficients of the cloned Dirac cones is yet not fully characterized and many open questions, including the evolution of charge dynamics and impurity scattering responsible for them, have remained unexplored. Noise measurements, having the potential to address these questions, have not been performed to date in dual-gated hBN-graphene-hBN devices. Here, we present the low-frequency 1/f noise measurements at multiple Dirac cones in hBN encapsulated single and bilayer graphene in dual-gated geometry. Our results reveal that the low-frequency noise in graphene can be tuned by more than two-orders of magnitude by changing carrier concentration as well as by modifying the band structure in bilayer graphene. We find that the noise is surprisingly suppressed at the cloned Dirac cone compared to the primary Dirac cone in single layer graphene device, while it is strongly enhanced for the bilayer graphene with band gap opening. The results are explained with the calculati...Continue Reading

References

Nov 11, 2005·Nature·K S NovoselovA A Firsov
Mar 3, 2007·Nature Materials·A K Geim, K S Novoselov
Jul 31, 2007·Nature Materials·F SchedinK S Novoselov
Dec 7, 2007·Nature Materials·Jeroen B OostingaLieven M K Vandersypen
Feb 1, 2008·Physical Review Letters·S V MorozovA K Geim
Feb 21, 2008·Nano Letters·Alexander A BalandinChun Ning Lau
Feb 27, 2008·Nano Letters·Yu-Ming Lin, Phaedon Avouris
Apr 28, 2009·Physical Review Letters·Atindra Nath Pal, Arindam Ghosh
Apr 9, 2010·Nano Letters·Iddo HellerSerge G Lemay
Aug 6, 2010·Nano Letters·Guangyu XuKang L Wang
Jan 15, 2011·Physical Review Letters·Thiti Taychatanapat, Pablo Jarillo-Herrero
Feb 22, 2011·ACS Nano·Atindra Nath PalArindam Ghosh
Mar 16, 2011·Journal of Physics. Condensed Matter : an Institute of Physics Journal·S RumyantsevA A Balandin
May 18, 2011·Nano Letters·Alexander S MayorovA K Geim
Jul 23, 2011·Nature Materials·Alexander A Balandin
Sep 4, 2012·The Review of Scientific Instruments·Andrey V Kretinin, Yunchul Chung
May 17, 2013·Nature·L A PonomarenkoA K Geim
Feb 20, 2015·Nature Communications·Jeil JungShaffique Adam

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Citations

Dec 9, 2016·Nature Communications·Paritosh KarnatakArindam Ghosh
Dec 15, 2016·Nano Letters·Clevin HandschinChristian Schönenberger
Oct 14, 2020·Nanotechnology·Ngoc Anh Minh TranThomas Szkopek
Apr 15, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·David CollombSimon Bending
Feb 2, 2018·ACS Applied Materials & Interfaces·Wugang LiaoChunxiang Zhu
Aug 7, 2018·ACS Applied Materials & Interfaces·Teerayut UwannoKosuke Nagashio
Mar 20, 2020·ACS Applied Materials & Interfaces·Mengchuan TianYanqing Wu
Oct 8, 2021·Scientific Reports·Mohammad T HaquePertti Hakonen

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