ELFT HÍRADÓ

[Varga Imre <varga AT galilei.phy.bme.hu>]

                                                  MEGHIVO
                            a BME Fizikai Intezet, Elmeleti Fizika Tanszek
                                              szeminariumara:


                                                Pascal Simon
                                 Université Joseph Fourier, Grenoble

                           "Nuclear spin ferromagnetic phase transition
                                   in an interacting 2D electron gas"

        Kivonat: Electrons in a two-dimensional semiconducting heterostructure
        interact with nuclear spins via the hyperfine interaction. Using a a 
Kondo
        lattice formulation of the electron-nuclear spin interaction, I will 
show
        that the nuclear spin system within an interacting two-dimensional 
electron
        gas undergoes a ferromagnetic phase transition at finite 
temperatures. We
        find that electron-electron interactions and non-Fermi liquid behavior
        substantially enhance the nuclear spin Curie temperature into the mK 
range
        with decreasing electron density.

        Helye: BME Fizikai Intezet,
                  Elmeleti Fizika Tanszek
                  Budafoki ut 8.
                  F-epulet, III. lepcsohaz, mfszt. Szeminariumi szoba

        Ideje: 2007. oktober 5. pentek, 10:15.


        Minden erdeklodot szivesen latunk.



                                                                        Varga 
Imre