Electrical resistivity of Sr14-xAxCu24O41 (A = Ca, La) single crystals: Localization of hole pairs in the ladder

K. Kudo, S. Ishikawa, T. Noji, T. Adachi, Y. Koike, K. Maki, S. Tsuji, K. Kumagai

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We have investigated the electrical resistivity ρ and the magnetic susceptibility of Sr14-xAxCu24O41 (A = Ca,La) single crystals. The Arrhenius plot of In ρ versus T-1 exhibits a bend at a temperature Tρ and gives two kinds of activation energy above and below Tρ. The activation energy at low temperatures below Tρ is in approximate agreement with the spin gap in the ladder. Accordingly, it appears that hole pairs are localized at T < Tρ and that thermally activated single-holes contribute to the electrical conduction at T < Tρ.

Original languageEnglish
Pages (from-to)651-652
Number of pages2
JournalPhysica B: Condensed Matter
Volume284-288
Issue numberPART I
DOIs
Publication statusPublished - Jan 1 2000
Externally publishedYes

Keywords

  • Activation energy
  • Hole pairing
  • Ladder-type superconductor
  • Spin gap
  • Spin ladder systems

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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    Kudo, K., Ishikawa, S., Noji, T., Adachi, T., Koike, Y., Maki, K., Tsuji, S., & Kumagai, K. (2000). Electrical resistivity of Sr14-xAxCu24O41 (A = Ca, La) single crystals: Localization of hole pairs in the ladder. Physica B: Condensed Matter, 284-288(PART I), 651-652. https://doi.org/10.1016/S0921-4526(99)02309-1