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

K. A. Matveev, A. Furusaki, and L. I. Glazman
Phys. Rev. Lett. 98, 096403 – Published 1 March 2007

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 ε measured 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.

  • Figure
  • Figure
  • Received 10 May 2006

DOI:https://doi.org/10.1103/PhysRevLett.98.096403

©2007 American Physical Society

Authors & Affiliations

K. A. Matveev1, A. Furusaki2, and L. I. Glazman3

  • 1Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
  • 2Condensed Matter Theory Laboratory, RIKEN, Wako, Saitama 351-0198, Japan
  • 3Theoretical Physics Institute, University of Minnesota, Minneapolis, Minnesota 55455, USA

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Issue

Vol. 98, Iss. 9 — 2 March 2007

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