Bulletin of the American Physical Society
APS March Meeting 2013
Volume 58, Number 1
Monday–Friday, March 18–22, 2013; Baltimore, Maryland
Session N6: Focus Session: Graphene - Electronic Properties, Gap Formation
11:15 AM–2:15 PM,
Wednesday, March 20, 2013
Sponsoring Unit: DMP
Chair: Nancy Sandler, Ohio University
Abstract ID: BAPS.2013.MAR.N6.1
Abstract: N6.00001 : Interaction-induced gapped state in charge neutral bilayer graphene
11:15 AM–11:51 AM
Jairo Velasco Jr.
(University of California Berkeley)
Bilayer graphene (BLG) at the charge neutrality point (CNP) possess instability to electronic interactions, and is expected to host a ground state with spontaneously broken symmetries. Within this regime, I will discuss our transport spectroscopy measurements using high quality suspended BLG samples. We observe an insulating state at CNP with a gap $\sim$ 2 meV, which can be closed by finite doping or a perpendicular electric field of either polarity. For magnetic field B \textgreater\ 1T, the gap increases linearly with B. Our work contributes towards understanding the rich interaction-driven physics in BLG. Finally, latest progress on transport spectroscopy measurements of Landau level gaps in these high quality samples will also be discussed.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2013.MAR.N6.1
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