Variable-range hopping conductivity in the copper-oxygen chains of La3Sr3Ca8Cu24O41

T. Vuletić, B. Korin-Hamzić, S. Tomić, B. Gorshunov, P. Haas, M. Dressel, Jun Akimitsu, T. Sasaki, T. Nagata

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

We show that the spin chain/ladder compound La3Sr3Ca8Cu24O41 is an insulator with hopping transport along the chains. In the temperature range 35–280 K, dc conductivity σdc(T) follows Mott’s law of variable-range hopping conduction; the frequency dependence has the form σ(ν, T) = σdc(T) + A(T)νs, where s ≈ 1. The conduction mechanism changes from variable-range hopping to nearest-neighbor hopping around Tc = 300 K. The chain array thus behaves as a one-dimensional disordered system. Disorder is due to random structural distortions of chains induced by irregular coordination of the La/Sr/Ca ions.

Original languageEnglish
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume67
Issue number18
DOIs
Publication statusPublished - May 29 2003
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Variable-range hopping conductivity in the copper-oxygen chains of La<sub>3</sub>Sr<sub>3</sub>Ca<sub>8</sub>Cu<sub>24</sub>O<sub>41</sub>'. Together they form a unique fingerprint.

  • Cite this