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Início
Agenda |
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- 26 de março de 2014
16h30
Sala F-210
Alexander
Punnoose
IFT-UNESP -
Quantum
phase transitions in a disordered Fermi liquid and the
metal-insulator transition in two dimensions -
Electrons in
a disordered system propagate diffusively at sufficiently low
temperatures. It is well know that the effects of quantum
diffusion are profound in two dimensions, even weak disorder
leads to the complete destruction of the Fermi-liquid at low
temperatures. In this talk, I will discuss recent theoretical
progress in our understanding of disordered Fermi liquids in the
context of scaling theory, the most promising analytical tool
available to understand the physics of disordered systems. I
will argue that the observed metal-insulator transition in two
dimensions corresponds to a quantum critical point. The results
of various experiments designed to test the predictions of the
scaling theory will be detailed. -
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