Observation of excited states in a graphene double quantum dot

Details Observation of excited states in a graphene double quantum dot Observation of excited states in a graphene double quantum dot

2010-01-26

arxiv.org/abs/1001.4700v1

EPL 89, 67005 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

We study a graphene double quantum dot in different coupling regimes. Despite the strong capacitive coupling between the dots, the tunnel coupling is below the experimental resolution. We observe additional structures inside the finite-bias triangles, part of which can be attributed to electronic excited dot states, while others are probably due to modulations of the transmission of the tunnel barriers connecting the system to source and drain leads.

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