Electrical resistivity of Sr14-xAxCu24O41 (A = Ca, La) single crystals

Localization of hole pairs in the ladder

Kazutaka 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
Publication statusPublished - 2000
Externally publishedYes

Fingerprint

Ladders
ladders
Activation energy
Single crystals
activation energy
Arrhenius plots
electrical resistivity
single crystals
Magnetic susceptibility
plots
magnetic permeability
conduction
Temperature
temperature

Keywords

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

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

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

Electrical resistivity of Sr14-xAxCu24O41 (A = Ca, La) single crystals : Localization of hole pairs in the ladder. / Kudo, Kazutaka; Ishikawa, S.; Noji, T.; Adachi, T.; Koike, Y.; Maki, K.; Tsuji, S.; Kumagai, K.

In: Physica B: Condensed Matter, Vol. 284-288, No. PART I, 2000, p. 651-652.

Research output: Contribution to journalArticle

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, vol. 284-288, no. PART I, pp. 651-652.
Kudo, Kazutaka ; Ishikawa, S. ; Noji, T. ; Adachi, T. ; Koike, Y. ; Maki, K. ; Tsuji, S. ; Kumagai, K. / Electrical resistivity of Sr14-xAxCu24O41 (A = Ca, La) single crystals : Localization of hole pairs in the ladder. In: Physica B: Condensed Matter. 2000 ; Vol. 284-288, No. PART I. pp. 651-652.
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AB - 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.

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