Carbon nanotube as a local drag sensor

ORAL

Abstract

We report a Columb drag measurement in a carbon nanotube (CNT) and graphene hybrid device. In this device, the CNT and graphene serve as a 1D and 2D electronic system respectively and are separated by a thin hexagonal boron nitride (h-BN). By flowing a drive current in one conductor, due to electron-electron interactions, a drag voltage is developed in the other conductor. In the case where a current is applied to graphene, the CNT can act as a local drag sensor that probes the microscopic effects of electronic interactions hidden in graphene. We demonstrate this drag sensor capability by applying a magnetic field in graphene and show the transition from compressible states to incompressible states.

–

Authors

  • Austin Cheng

    • Harvard University

  • Jean-Damien Pillet

    • Columbia University

  • Philip Kim

    • Harvard University, Department of Physics
    • Department of Physics, Harvard University, Cambridge, MA 02138, USA
    • Harvard University, Physics Department
    • Harvard University