HOPPING CONDUCTIVITY IN ONE-DIMENSIONAL Ca3Co2O6 SINGLE CRYSTAL

Autor:	Bertrand Raquet, Mario Norberto Baibich, H. Rakoto, J. M. Broto, Antoine Maignan, S. Lambert
Rok vydání:	2002
Předmět:	Materials science Condensed matter physics Crossover Coulomb Statistical and Nonlinear Physics Conductivity Electronic conductivity Condensed Matter Physics Single crystal Magnetic field
Zdroj:	International Journal of Modern Physics B. 16:3289-3292
ISSN:	1793-6578 0217-9792
DOI:	10.1142/s0217979202014206
Popis:	We studied the electronic conductivity of the quasi-one dimensional Ca3Co2O6 single crystal. The results evidence a VRH conductivity with temperature-induced crossover between 1D (intra-chain) and 3D transport and the opening of a Coulomb gap in the d bands. At low temperatures, an applied magnetic field induces a large negative magneto-resistance (MR) independent from the 3D magnetic ordering. Both spin-dependent hopping and field-induced suppression of the Coulomb gap are discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48864d64c833332f9e035c625b985d11 https://doi.org/10.1142/s0217979202014206 Zobrazit plný text záznamu