Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2008-11-26
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
5 pages
Scientific paper
The angle-dependent interlayer magnetoresistance of the layered organic metal $\alpha$-(BEDT-TTF)$_2$KHg(SCN)$_4$ is found to undergo a dramatic change from the classical conventional behavior at low magnetic fields to an anomalous one at high fields. This field-induced crossover and its dependence on the sample purity and temperature imply the existence of two parallel channels in the interlayer transport: a classical Boltzmann conductivity $\sigma_{c}$ and an incoherent channel $\sigma_{i}$. We propose a simple model for $\sigma_{i}$ explaining its metallic temperature dependence and low sensitivity to the inplane field component.
Biberacher W.
Grigoriev Pavel D.
Kartsovnik Mark V.
Kushch N. D.
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