Crossovers in the out-of-plane resistivity of superconducting Tl2Ba2CaCu2O8 single crystals

J. P. Salvetat, H. Berger, A. Halbritter, G. Mihály, D. Pavuna, L. Forró

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We report the in-plane (ρab) and out-of-plane (ρc) resistivities in the 4 800 Κ range on single crystals of Tl2Ba2CaCu2O8 high-Τc cuprate with Τc = 111 Κ (ρcab ≈ 1000). ρab(Τ) exhibits "usual" linear behavior and ρc(Τ) follows generally metallic-like, positive slope in the 150 400 Κ temperature range. There is a clear crossover to semiconductor-like behavior close to Τc. However, for the first time in a chainless high-Τc cuprate we observe a crossover above 500 Κ due to hopping conduction. Under high pressures (< IS kbar) the magnitude of ρc strongly decreases, yet the ρc(Τ) slope does not change. This suggests that the out-of-plane charge transport is governed by the interplane tunneling rate.

Original languageEnglish
Pages (from-to)584-588
Number of pages5
JournalEurophysics Letters
Volume52
Issue number5
DOIs
Publication statusPublished - Dec 1 2000

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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