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Luttinger-liquid-like transport in long InSb nanowires

S. V. Zaitsev-Zotov·Yu. A. Kumzerov·Yu. A. Firsov·P. Monceau
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Abstract

Long nanowires of degenerate semiconductor InSb in asbestos matrix (wire diameter is around 50 Å, length 0.1 - 1 mm) were prepared. Electrical conduction of these nanowires is studied over a temperature range 1.5 - 350 K. It is found that a zero-field electrical conduction is a power function of the temperature $G\propto T^α$ with the typical exponent $α\approx 4$. Current-voltage characteristics of such nanowires are found to be nonlinear and at sufficiently low temperatures follows the power law $I\propto V^β$. It is shown that the electrical conduction of these nanowires cannot be accounted for in terms of ordinary single-electron theories and exhibits features expected for impure Luttinger liquid. For a simple approximation of impure LL as a pure one broken into drops by weak links, the estimated weak-link density is around $10^3-10^4$ per cm.

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S. V. Zaitsev-Zotov, Yu. A. Kumzerov, Yu. A. Firsov, P. Monceau. 1999-07-06. Luttinger-liquid-like transport in long InSb nanowires. https://doi.org/10.1088/0953-8984%2F12%2F20%2F101

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