1998•Journal of Physics Condensed MatterRequires access

Effect of size on quantized conductance in a dirty quantum wire

Huang Xiaowu, Gao Xianlong, Du Yijing

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Abstract

Making use of the Zubarev correlation functions, we calculate and discuss the quantized conductance for a Tomonaga-Luttinger (TL) liquid coupled to phonons in a dirty quantum wire. In this system, the electron-phonon (e-p) coupling increases the conductance, while the impurities in the quantum wire reduce the conductance. The quantum wire length satisfies a certain condition, which determines whether e-p scattering will dominate over impurity scattering. However, the conductance is destroyed under certain conditions: namely, there is a size effect.

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Making use of the Zubarev correlation functions, we calculate and discuss the quantized conductance for a Tomonaga-Luttinger (TL) liquid coupled to phonons in a dirty quantum wire. In this system, the electron-phonon (e-p) coupling increases the conductance, while the impurities in the quantum wire reduce the conductance. The quantum wire length satisfies a certain condition, which determines whether e-p scattering will dominate over impurity scattering. However, the conductance is destroyed under certain conditions: namely, there is a size effect.

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Available abstract

Making use of the Zubarev correlation functions, we calculate and discuss the quantized conductance for a Tomonaga-Luttinger (TL) liquid coupled to phonons in a dirty quantum wire. In this system, the electron-phonon (e-p) coupling increases the conductance, while the impurities in the quantum wire reduce the conductance. The quantum wire length satisfies a certain condition, which determines whether e-p scattering will dominate over impurity scattering. However, the conductance is destroyed under certain conditions: namely, there is a size effect.

Key concepts: Conductance, Quantum wire, Conductance quantum, Condensed matter physics, Scattering, Quantum, Impurity, Physics

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