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Frequency dependent transport of one dimensional correlated electrons
G. Cuniberti , M. Sassetti, and B. Kramer
NATO ASI ``Mesoscopic Electron Transport''
1996.06; Curaçao, Netherlands Antilles
| Transport properties of one dimensional correlated
electrons have been studied via the Luttinger
liquid model [1,2]. Some of the results found are
presented here. For a pure Luttinger liquid (no
barriers) the non-local conductivity is determined.
The frequency dependent conductance is calculated in
the presence of a longitudinal monochromatic electric
field, applied to a finite interval of the system. We
treat several forms of the interaction potential with
finite range. The conductance, as a function of the
frequency, shows features that are a signature of
elementary excitations. They can be interpreted in
terms of a quantum capacitance and inductance. The
influence of a finite range of the interactions is also
studied for a tunnel barrier in a Luttinger liquid. The
non linear DC conductance shows a charging energy
associated to the tunnel barrier. This provides a
microscopic understanding of earlier phenomenological
approaches. The dependence of the charging energy on
the strength and the range of the interactions is
quantitatively discussed.
[1] G. Cuniberti, M.
Sassetti, and B. Kramer, J. Phys. Cond. Mat., 8,
L21 (1996) [2] G. Cuniberti, M. Sassetti, and B.
Kramer, Physica B., in press.
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last modified: 2021.04.14 Wed
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Prof. Dr. Gianaurelio Cuniberti
secretariat:
postal address:
Institute for Materials Science
TU Dresden
01062 Dresden, Germany
visitors and courier address:
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