X-ray Resonant Magnetic Scattering : Polarisation Dependence in the non-spherical case

نویسنده

  • Alessandro Mirone
چکیده

We develop a simple tensorial contraction method to obtain analytical formula for X-ray resonant magnetic scattering. We apply the method considering first electric dipole-dipole and electric quadrupolequadrupole scattering in the isolated atom approximation and compare the results with previous works. Then we apply the method to derive phenomenological original formulas which account also for nonspherical systems and for dipole-quadrupole mixing. PACS. 61.10.-i X-ray diffraction and scattering 33.55.Fi Other magnetooptical and electrooptical effects

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

X-ray resonant magnetic scattering: polarization dependence in the non-spherical case.

A simple tensorial contraction method has been developed to obtain analytical formulae for X-ray resonant magnetic scattering. First, the method has been applied considering electric dipole-dipole and electric quadrupole-quadrupole scattering in the isolated-atom approximation. The results have been compared with previous work. The same method has then been extended to non-spherical systems by ...

متن کامل

Angular dependence of Resonant Inelastic X-ray Scattering. I. Spherical tensor expansion

Resonant inelastic x-ray scattering (RIXS) is a remarkable tool to study electronic and phonon excitations in solids [1]. By selecting the suitable absorption edge one can choose a specific atomic species and orbital in a complex compound. The information content of RIXS is enhanced by the fact that the observed spectra depend on the polarization and direction of the incident and scattered beam...

متن کامل

Resonant x-ray scattering study of magnetic and orbital order in KCuF3

We present the results of resonant x-ray scattering experiments on KCuF3. Structurally forbidden reflections, corresponding to magnetic and 3d-orbital long-range order, have been observed. Integrated intensities have been measured as a function of incident energy, polarization, azimuthal angle, and temperature. By means of ab initio local spin density approximation ~LSDA! and local spin density...

متن کامل

The Non-Resonant Magnetic X-ray Scattering Cross Section of MnF 2. 2. High-Energy X-ray Diffraction at 80 keV

Results of high-energy non-resonant magnetic X-ray diffraction experiments performed on the model system MnF 2 at a photon energy of 80 keV are presented. A surprisingly high peak intensity of the magnetic 300 reflection of 13 000 photons s -1 in the three-crystal mode and 19 000 photons s -1 in the two-crystal mode, with a peak-to-background ratio of 230:1 and 10:1, respectively, has been achi...

متن کامل

Computation of Light Scattering in Young Stellar Objects

A Monte Carlo light scattering code incorporating aligned non-spherical particles is described. The major effects on the flux distribution, linear polarisation and circular polarisation are presented, with emphasis on the application to Young Stellar Objects (YSOs). The need for models with non-spherical particles in order to successfully model polarisation data is reviewed. The ability of this...

متن کامل

ذخیره 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 2006