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Title：
Quantum Transport and Correlated Phenomena in Bilayer and Trilayer Graphene Membranes
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Speaker：
Dr. Jeanie Lau（University of California Riverside ）
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Time：
1:30pm-2:30pm
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Venue：
Room 607, Science Building No.5
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Host：
陈剑豪
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Abstract:
Graphene, a two - dimensional single atomic layer of carbon, has recently emerged as a new model system for condensed matter physics, as well as a promising candidate for electronic materials. Though single layer graphene is gapless, bilayer and trilayer graphene have tunable band gaps that may be induced by out-of-plane electric fields or arise from collective excitation of electrons. Here I will present our results on transport measurements in bilayer and trilayer graphene devices with mobility as high as 400,000 cm2/Vs. We demonstrate the presence of an intrinsic gapped state in bilayer graphene at the charge neutrality point, evidence for quantum phase tranisition, and stacking-order dependent transport in trilayer graphene. Our results underscore the fascinating many-body physics in these 2D membranes, and have implications for band gap engineering for graphene electronics and optoelectronic applications.
