Physical properties of quasi-one-dimensional SrNbO3.41 and Luttinger liquid analysis of electrical transport

A. De Campos, M. S. Da Luz, C. A.M. Dos Santos, A. T. Rice, A. M. Deml, B. D. White, J. J. Neumeier, J. L. Cohn

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

We report the diagonal components of the electrical resistivity tensor of quasi-one-dimensional SrNbO3.41, determined using the Montgomery method. The results confirm quasi-one-dimensional behavior but show a smaller anisotropy than previously reported. High-resolution linear thermal expansion reveals weakly anisotropic behavior and no evidence of charge-density wave formation, which has been suspected as the cause of the upturn in the electrical resistivity ρ near 50 K. Heat-capacity measurements reveal an electronic heat-capacity coefficient that is near zero with a Debye temperature ΘD =382 (1) K. We report that ρ exhibits power-law behavior, as expected within the framework of Luttinger liquid theory for quasi-one-dimensional systems. Detailed analysis of the data above 100 K implies relatively strong correlations and the possibility of a gap in the spin-excitation spectrum. The origin of the small energy gap below 50 K and the conduction mechanism in this region remain as outstanding issues.

Original languageEnglish (US)
Article number125117
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume82
Issue number12
DOIs
StatePublished - Sep 20 2010

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Physical properties of quasi-one-dimensional SrNbO<sub>3.41</sub> and Luttinger liquid analysis of electrical transport'. Together they form a unique fingerprint.

Cite this