TY - JOUR
T1 - Probing the intrinsic state of a one-dimensional quantum well with photon-assisted tunneling
AU - Shafranjuk, S. E.
PY - 2008/12/1
Y1 - 2008/12/1
N2 - The photon-assisted tunneling (PAT) through a single wall carbon nanotube quantum well (QW) is suggested for probing the Tomonaga-Luttinger liquid (TLL) state. The elementary TLL excitations inside the quantum well are density (ρ±) and spin (σ±) bosons. The bosons populate the quantized energy levels εn ρ+ =Δn/g and εn ρ- (σ±)=Δn where Δ=h vF/L is the interlevel spacing, n is an integer number, L is the tube length, and g is the TLL parameter. Since the external electromagnetic field acts on the ρ+ bosons only whereas the neutral ρ- and σ± bosons remain unaffected, the PAT spectroscopy is able of identifying the ρ+ levels in the QW setup. The spin εn σ+ boson levels in the same QW are recognized from Zeeman splitting when applying a dc magnetic field H≠0. Basic TLL parameters are readily extracted from the differential conductivity curves.
AB - The photon-assisted tunneling (PAT) through a single wall carbon nanotube quantum well (QW) is suggested for probing the Tomonaga-Luttinger liquid (TLL) state. The elementary TLL excitations inside the quantum well are density (ρ±) and spin (σ±) bosons. The bosons populate the quantized energy levels εn ρ+ =Δn/g and εn ρ- (σ±)=Δn where Δ=h vF/L is the interlevel spacing, n is an integer number, L is the tube length, and g is the TLL parameter. Since the external electromagnetic field acts on the ρ+ bosons only whereas the neutral ρ- and σ± bosons remain unaffected, the PAT spectroscopy is able of identifying the ρ+ levels in the QW setup. The spin εn σ+ boson levels in the same QW are recognized from Zeeman splitting when applying a dc magnetic field H≠0. Basic TLL parameters are readily extracted from the differential conductivity curves.
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U2 - 10.1103/PhysRevB.78.235115
DO - 10.1103/PhysRevB.78.235115
M3 - Article
AN - SCOPUS:58149218187
SN - 1098-0121
VL - 78
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 23
M1 - 235115
ER -