Anomalous conductance quantization in carbon nanotubes.
Conductance measurements of carbon nanotubes containing gated local depletion regions exhibit plateaus as a function of gate voltage, spaced by approximately 1e(2)/h, the quantum of conductance for a single (nondegenerate) mode. Plateau structure is investigated as a function of bias voltage, temperature, and magnetic field. We speculate on the origin of this surprising quantization, which appears to lack band and spin degeneracy.
Biercuk
M J
MJ
Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA.
Mason
N
N
Martin
J
J
Yacoby
A
A
Marcus
C M
CM