Dipolar ferromagnets and glasses (invited)
نویسندگان
چکیده
منابع مشابه
Critical Dynamics of Dipolar Ferromagnets
The dynamics of isotropic ferromagnets as EuO, EuS and Fe has been in focusever since the very beginnings ofthe field of critical dynamics. Despite the largeamount of experimental [1—6]and theoretical investigations [7,8], there remain importantopen problemswhich havenot been resolved up to now. (i) The expected crossover from isotropic to dipolar critical behaviour, accompanied by a change of ...
متن کاملSHAPE FUNCTIONS OF DIPOLAR FERROMAGNETS AT THE CURIE POINT E. FREY, F. SCHWABL and S. THOMA
An increasing quantitative understanding of the critical dynamics of isotropic ferromagnets such as EuO, EuS and Fe above T~has been achieved recently by taking into account the long range dipolar interaction, which is present in all real ferromagnets. The results of various experimental methods [1—11] (neutron scattering, electron spin resonance and hyperfine interaction), sampling different r...
متن کاملCritical Dynamics of Ferromagnets
The crossover in the dynamics from isotropic to dipolar critical behaviour has been a matter of debate over many years. We review a mode coupling theory for dipolar ferromagnets which gives a unified explanation of the seemingly contradictory experimental situation. The shape functions, the scaling functions for the damping coefficients and the precise position of the crossover are computed. Be...
متن کاملRenormalized Field Theory for the Static Crossover in Dipolar Ferromagnets
A field theoretical description for the static crossover in dipolar ferromagnets is presented. New non leading critical exponents for the longitudinal static susceptibility are identified and the existence and magnitude of the dip in the effective critical exponent of the transverse susceptibility found by matching techniques is scrutinized. It was first shown by Aharony and Fisher [l] that the...
متن کاملEinstein-de Haas effect in dipolar Bose-Einstein condensates.
The general properties of the order parameter for a dipolar spinor Bose-Einstein condensate are discussed based on symmetries of interactions. An initially spin-polarized dipolar condensate is shown to dynamically generate a nonsingular vortex via spin-orbit interactions--a phenomenon reminiscent of the Einstein-de Haas effect in ferromagnets.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2014