Effect of a magnetic field on an E circle times epsilon Jahn-Teller system: Berry phase and optical properties - art. no. 132403

We have studied the effect of a uniform magnetic field on Berry phase (BP) and optical properties (absorption for right-hand and left-hand circularly polarized light) of an E x epsilon Jahn-Teller (JT) system. The magnetic fi eld is applied along the trigonal axis of a trigonal-symmetry compound. Dyn amical properties are exactly determined in the framework of the Lanczos al gorithm, because the coefficients of the recursion procedure can be put in analytic form. Different strength of linear electron-phonon coupling and ma gnetic field are studied, and the connection with BP is analyzed.