Observation of unitary conductance for resonant tunneling with dissipation
Conference Paper
We investigate tunneling through a resonant level formed in a carbon nanotube quantum dot contacted by resistive metal wires. These contacts create a dissipative environment for the electrons tunneling across the nanotube, thus suppressing the tunneling rate. We study the shape of the resonant peak in the nanotube conductance, with the expectation that the peak width and height, both dependent on the tunneling rate, will be suppressed. Instead, we find that the behavior crucially depends on the ratio of the tunneling rates from the resonant level to the two contacts. We discuss the implication of our findings for a boundary quantum phase transition in this system. © Published under licence by IOP Publishing Ltd.
Full Text
Duke Authors
Cited Authors
- Mebrahtu, H; Borzenets, I; Bomze, Y; Finkelstein, G
Published Date
- January 1, 2012
Published In
Volume / Issue
- 400 / PART 4
Electronic International Standard Serial Number (EISSN)
- 1742-6596
International Standard Serial Number (ISSN)
- 1742-6588
Digital Object Identifier (DOI)
- 10.1088/1742-6596/400/4/042007
Citation Source
- Scopus