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Asymmetric Zero-Bias Anomaly for Strongly Interacting Electrons in One Dimension

K. A. Matveev·A Furusaki·L. I. Glazman
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Abstract

We study a system of one-dimensional electrons in the regime of strong repulsive interactions, where the spin exchange coupling J is small compared with the Fermi energy, and the conventional Tomonaga-Luttinger theory does not apply. We show that the tunneling density of states has a form of an asymmetric peak centered near the Fermi level. In the spin-incoherent regime, where the temperature is large compared to J, the density of states falls off as a power law of energy εmeasured from the Fermi level, with the prefactor at positive energies being twice as large as that at the negative ones. In contrast, at temperatures below J the density of states forms a split peak with most of the weight shifted to negative ε.

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K. A. Matveev, A Furusaki, L. I. Glazman. 2006-05-11. Asymmetric Zero-Bias Anomaly for Strongly Interacting Electrons in One Dimension. https://doi.org/10.1103/physrevlett.98.096403

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