張綿福 Albert M. Chang
Physics in One-Dimension: from Superconductivity to Wigner Crystals to Probes of Fractional Charge
Abstract:
In the drive toward miniaturization of devices, we naturally reach new regimes of reduced dimensions, from three to two, to one, to zero dimensions. These reduced dimensions are defined in the context of quantum- mechanics. Reduced dimensions lead to so-called reduced phase-space, or basically, reduced degrees of freedom. This brings new behaviors which are not encountered in our familiar three dimensions.
I will present several examples of new physics associated with the 1 dimensional electronic systems, including 1-dimensional Luttinger liquids and fractional charge, superconductivity in ultra thin nanowires (~ 30 atoms across), as well as possible 1-d electron crystals.