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Quasi-one-dimensional hopping conductivity of the spin-ladder single crystals: Influence of the cation and oxygen nonstoichiometry
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10.1063/1.2946451
/content/aip/journal/jap/103/12/10.1063/1.2946451
http://aip.metastore.ingenta.com/content/aip/journal/jap/103/12/10.1063/1.2946451

Figures

Image of FIG. 1.
FIG. 1.

Temperature dependence of the resistivity for 1ag and 1an. Insets: The plots of vs for 1ag and 1an.

Image of FIG. 2.
FIG. 2.

Temperature dependence of the local activation energy (top panel) and the plots of vs (bottom panel) for 1ag. The lines on the top panel are drawn for and ; the line on the bottom panel is the linear fit of the experimental data.

Image of FIG. 3.
FIG. 3.

Temperature dependence of the local activation energy (top panel) and the plots of vs (bottom panel) for 1an. The lines on the top panel are drawn for and ; the line on the bottom panel is the linear fit of the experimental data.

Image of FIG. 4.
FIG. 4.

The plots of vs for the samples investigated (solid lines). The dotted line represents the value of , corresponding to the value of obtained from the data for 2b as described in the text.

Tables

Generic image for table
Table I.

Composition and concentration of ions in the samples investigated (1ag, 1an, and 2b) and in the stoichiometric (Stoich.) compound.

Generic image for table
Table II.

The NNH activation energy , the VRH characteristic temperature , the VRH onset temperature , the width of the Coulomb gap , and the ratios of and in 2b with respect to other samples.

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/content/aip/journal/jap/103/12/10.1063/1.2946451
2008-06-24
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Quasi-one-dimensional hopping conductivity of the spin-ladder CaCu2O3 single crystals: Influence of the cation and oxygen nonstoichiometry
http://aip.metastore.ingenta.com/content/aip/journal/jap/103/12/10.1063/1.2946451
10.1063/1.2946451
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