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GERSHENSON LAB MESOSCOPIC PHYSICS and
QUANTUM COMPUTING
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Quantum Effects in the
Conductivity of Strongly Correlated 2D Systems at milli-Kelvin Temperatures One of the outstanding
problems of modern solid state physics is the behavior of
strongly-interacting and disordered electron systems. The fascinating physics
of strong correlations unveils when the Coulomb interaction energy exceeds
the Fermi energy. The theoretical description of 2D systems has not reached a
predictive “first principles” stage yet, very little is known about fundamentals
of strong electron-electron interactions, and about quantum ground state(s)
of disordered interacting 2D systems. It is anticipated that the phase
diagram of strongly interacting two-dimensional (2D) systems is remarkably
rich: a multitude of electronic phases might lie between the limiting cases
of a conventional paramagnetic Fermi liquid (high densities), Wigner crystal
(low densities, weak disorder), and paramagnetic strongly localized state
(strong disorder). Our experimental effort focuses on the study
of quantum effects in the conductivity of high-mobility Si-based
Metal-Oxide-Semiconductor Field Effect Transistors (Si
MOSFETs).
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