Extremely Small Energy Gap in the Quasi-One-Dimensional Conducting Chain Compound SrNbO$_{3.41}$

C. A. Kuntscher; S. Schuppler; P. Haas; B. Gorshunov; M. Dressel; M. Grioni; F. Lichtenberg; A. Herrnberger; F. Mayr; J. Mannhart

doi:10.1103/PhysRevLett.89.236403

Extremely Small Energy Gap in the Quasi-One-Dimensional Conducting Chain Compound SrNbO$_{3.41}$

Strongly Correlated Electrons 2009-11-07 v2

Authors: C. A. Kuntscher , S. Schuppler , P. Haas , B. Gorshunov , M. Dressel , M. Grioni , F. Lichtenberg , A. Herrnberger , F. Mayr , J. Mannhart

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Abstract

Resistivity, optical, and angle-resolved photoemission experiments reveal unusual one-dimensional electronic properties of highly anisotropic SrNbO $_{3.41}$ . Along the conducting chain direction we find an extremely small energy gap of only a few meV at the Fermi level. A discussion in terms of typical 1D instabilities (Peierls, Mott-Hubbard) shows that neither seems to provide a satisfactory explanation for the unique properties of SrNbO $_{3.41}$ .

Keywords

SrNbO3.41 energy gap Fermi level 1D instability Peierls transition Mott-Hubbard

Cite

@article{arxiv.cond-mat/0103485,
  title  = {Extremely Small Energy Gap in the Quasi-One-Dimensional Conducting Chain Compound SrNbO$_{3.41}$},
  author = {C. A. Kuntscher and S. Schuppler and P. Haas and B. Gorshunov and M. Dressel and M. Grioni and F. Lichtenberg and A. Herrnberger and F. Mayr and J. Mannhart},
  journal= {arXiv preprint arXiv:cond-mat/0103485},
  year   = {2009}
}

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4 pages, 3 figures

Extremely Small Energy Gap in the Quasi-One-Dimensional Conducting Chain Compound SrNbO$_{3.41}$

Abstract

Keywords

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