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Page 1: Unveiling the tunneling phenomena in graphene graphene ...phantomsfoundation.com/ONLINE/...Amanpreet_213.pdf · Amanpreet Kaur & Ravi Chand Singh Department of Physics, Guru Nanak


Unveiling the tunneling phenomena in graphene–graphene homo-junctions for emerging device applications

Amanpreet Kaur & Ravi Chand SinghDepartment of Physics, Guru Nanak Dev University Amritsar-143005, India


In this outline, a novel class of two-dimensional (2D) assembly namely thicknesscontrolled homo-junctions with a configuration similar to graphene–insulator-graphene is introduced in this work.

We demonstrate 2D–2D quantum tunneling between two graphene stacks in whichvan der Waals gap serves the purpose of tunneling barrier.

The nonlinear I–V characteristics with improved current switching ratio (Ion/Ioff) of~10^6 coupled with counterclockwise current hysteresis which are the signatures of amemristive devices has been validated in the tunneling regime.

It is the first time to report on revealing thickness modulated 2D homo junctions inexfoliated graphenic material and to disclose the involved tunneling mechanism forswitching applications.

This work promises well for the possibilities of graphene sheets for the realization oftwo terminal configured devices as a substitute of three terminal graphene basedfield effect transistors in the area of resistive switching memories.

Tunneling junctions from SEM and TEM studies

I-V Characteristics

Dr Amanpreet [email protected]


1. Amanpreet Kaur and Ravi Chand Singh (2019) Journal of Physics: Condensed matter (31(47):475303.2. Amanpreet Kaur, Jasmeet Kaur & Ravi Chand Singh (2018) Materials Research Express, 5, 085601, 1-14.

ACKNOWLEDMENTSWe are thankful to UGC Govt. of India for financial assistance and instrument facilities..

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