No subject

[CM ICTP - Trieste]

CONDENSED MATTER SECTION

	
INFORMAL SEMINAR





Friday, 15 June 2007   -    11:00 a.m.




Seminar Room -  Main Bldg. - first floor







D.L. MASLOV

(University of Florida)



"Anomalous c-axis transport in layered metals"

Abstract

Transport in many layered materials (cuprates, perovskites,graphite, 
etc.) shows an interesting anomaly: whereas the temperature dependence 
of the in-plane resistivity is metallic, that of the out-of-plane 
(c-axis) resistivity is insulating or even non-monotonic. We show that 
the band transport in all directions, described by the standard 
Boltzmann equation, is robust with respect to both elastic and 
inelastic scattering as long as E_F\tau>>1. A model of phonon-assisted 
tunneling via resonant states located in between the layers is 
suggested to explain a non-monotonic temperature dependence of the 
c-axis resistivity observed in experiments.