136 citations · 508 across the 10 of their papers we have counts for
10 papers
Transport in Suspended Monolayer and Bilayer Graphene Under Strain: A New Platform for Material Studies
Hang Zhang, Jhao-Wun Huang, Jairo Velasco +9
We develop two types of graphene devices based on nanoelectromechanical systems (NEMS), that allows transport measurement in the presence of in situ strain modulation. Different mo…
Visualizing Electrical Breakdown and ON/OFF States in Electrically Switchable Suspended Graphene Break Junctions
Hang Zhang, Wenzhong Bao, Zeng Zhao +8
Narrow gaps are formed in suspended single to few layer graphene devices using a pulsed electrical breakdown technique. The conductance of the resulting devices can be programmed b…
Quantum Transport and Field Induced Insulating States in Bilayer Graphene pnp Junctions
Lei Jing, Jairo Velasco, Philip Kratz +4
We perform transport measurements in high quality bilayer graphene pnp junctions with suspended top gates. At a magnetic field B=0, we demonstrate band gap opening by an applied pe…
Magnetoconductance Oscillations in High-Mobility Suspended Bilayer and Trilayer Graphene
Wenzhong Bao, Zeng Zhao, Hang Zhang +6
We report pronounced magnetoconductance oscillations observed on suspended bilayer and trilayer graphene devices with mobilities up to 270,000 cm2/Vs. For bilayer devices, we obser…
Lithography-free Fabrication of High Quality Substrate-supported and Freestanding Graphene devices
W. Bao, G. Liu, Z. Zhao +5
We present a lithography-free technique for fabrication of clean, high quality graphene devices. This technique is based on evaporation through hard Si shadow masks, and eliminates…
Probing Charging and Localization in the Quantum Hall Regime by Graphene pnp Junctions
Jairo Velasco, Gang Liu, Lei Jing +4
Using high quality graphene pnp junctions, we observe prominent conductance fluctuations on transitions between quantum Hall (QH) plateaus as the top gate voltage Vtg is varied. In…