Dimensionality crossover in the transport behavior of the quasi-one-dimensional conductor H2(phthalocyanine)I

Y. Lee*, H. H. Hensley, J. A. Thompson, K. Murata, B. M. Hoffman, T. M. Haard, P. J. Hamot, W. P. Halperin, P. Wölfle

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Electrical-transport measurements are reported on high-purity H2(pc)I single crystals and their alloys with Ni(pc)I in the temperature range from room temperature to 20 mK and in magnetic fields up to 5.5 T. We have observed a sharp maximum in conductivity at 1.8 K which we attribute to crossover from one- to three-dimensional behavior. The conductivity follows a simple quadratic temperature dependence below 1.8 K and remains metallic (≈ 104 Ω-1Cm-1) at very low temperatures. A negative contribution to the magnetoresistance appears at 1.8 K consistent with weak-localization theory.

Original languageEnglish (US)
Pages (from-to)681-686
Number of pages6
JournalEurophysics Letters
Volume36
Issue number9
DOIs
StatePublished - Dec 20 1996

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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