Observation of excited states in a graphene double quantum dot

F. Molitor; H. Knowles; S. Dröscher; U. Gasser; T. Choi; P. Roulleau; J. Güttinger; A. Jacobsen; C. Stampfer; K. Ensslin; T. Ihn

doi:10.1209/0295-5075/89/67005

Observation of excited states in a graphene double quantum dot

Mesoscale and Nanoscale Physics 2015-05-18 v1

Authors: F. Molitor , H. Knowles , S. Dröscher , U. Gasser , T. Choi , P. Roulleau , J. Güttinger , A. Jacobsen , C. Stampfer , K. Ensslin , T. Ihn

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Abstract

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.

Keywords

graphene double quantum dot excited states capacitive coupling tunnel coupling finite-bias triangles quantum dots

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@article{arxiv.1001.4700,
  title  = {Observation of excited states in a graphene double quantum dot},
  author = {F. Molitor and H. Knowles and S. Dröscher and U. Gasser and T. Choi and P. Roulleau and J. Güttinger and A. Jacobsen and C. Stampfer and K. Ensslin and T. Ihn},
  journal= {arXiv preprint arXiv:1001.4700},
  year   = {2015}
}

Observation of excited states in a graphene double quantum dot

Abstract

Keywords

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