Superconducting UPt3, under Pressure

Shih-Jye Sun；Tzay-Ming Hong

Chinese Journal of Physics

34卷2S期（1996 / 04 / 01）

546 - 551

英文

Slave-boson mean field is used for the Periodic Anderson model to study the coexistence between superconductivity and antiferromagnetism in UPt3. We assume that the antiferromagnetism comes from the spin-density-wave background and couples with the superconductivity through the change of density of states at the Fermi level. Our results agree qualitatively with the hydrostatic pressure and doping experiments. Besides, we predict that applying pressure or impurity doping can either reduce or enhance the superconducting transition temperature depending on the magnetic coupling constant.