Condensed Matter Physics Seminar

Thursday, October 26, 2000, 2 p.m.
Plant Sciences Building, Room 1130

Folklore and Experimental Facts About  2D "Metallic State"

Vladimir Pudalov

(Lebedev Physics Institute, Moscow and Rutgers University, NJ)

Abstract:  The phenomenon of the metallic-like strong temperature dependence of the conductivity is observed by now in about 10 different material systems.  This 10-years old story remains in the focus of interest because it raises a question on the ground state of the strongly interacting and disordered 2D carrier system.  In my talk, I shall review critically the main experimental data, discuss their interpretation, and discuss whether or not any  firm conclusions can be drawn out of them.  I shall also give a brief review of the proposed theoretical models and compare them with experimental data.  I shall demonstrate that the puzzling effect of the metallic-like conduction is irrelevant to the quantum physics and is most probably an (unknown) semi-classical effect.

Host: Sankar Das Sarma

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