Tomonaga-Luttinger liquid features in ballistic single-walled carbon nanotubes: conductance and shot noise.
We study the electrical transport properties of well-contacted ballistic single-walled carbon nanotubes in a three-terminal configuration at low temperatures. We observe signatures of strong electron-electron interactions: the conductance exhibits bias-voltage-dependent amplitudes of quantum interference oscillation, and both the current noise and Fano factor manifest bias-voltage-dependent power-law scalings. We analyze our data within the Tomonaga-Luttinger liquid model using the nonequilibrium Keldysh formalism and find qualitative and quantitative agreement between experiment and theory.
Quantum Entanglement Project, SORST, JST, E.L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USA. nayoung@stanford.edu
Na Young
NY
Kim
Patrik
P
Recher
William D
WD
Oliver
Yoshihisa
Y
Yamamoto
Jing
J
Kong
Hongjie
H
Dai