Neutron magnetic form factor in strongly correlated materials.
نویسندگان
چکیده
We introduce a formalism to compute the neutron magnetic form factor FM(q) within a first-principles density functional theory and dynamical mean field theory. The approach treats spin and orbital interactions on the same footing and reduces to earlier methods in the fully localized or the fully itinerant limit. We test the method on various actinides of current interest NpCoGa5, PuSb and PuCoGa5, and we show that PuCoGa5 is in mixed valent state, which naturally explains the measured magnetic form factor.
منابع مشابه
Local electronic nematicity in the 2 - dimensional Hub
Submitted for the MAR12 Meeting of The American Physical Society Local electronic nematicity in the 2-dimensional Hubbard model1 KUN FANG, GAYANATH FERNANDO, University of Connecticut, ARMEN KOCHARIAN, California State University — Recent measurements on magnetic and transport properties of some strongly correlated materials show a local electronic nematic phase which locally breaks the C4 symm...
متن کاملMicroscopic Scenario for Striped Superconductors
We argue that the superconducting state found in high-Tc cuprates is inhomogeneous with a corresponding inhomogeneous superfluid density. We introduce two classes of microscopic models which capture the magnetic and superconducting properties of these strongly correlated materials. We start from a generalized t-J model, in which appropriate inhomogeneous terms mimic stripes. We find that inhomo...
متن کاملOn the evolution of the ground state in the system UxLa1−xS: Polarized neutron diffraction and X-ray magnetic circular dichroism study
In the UxLa1−xS system there is an abrupt loss of the long-range ferromagnetic ordering found in pure US at a critical concentration xc ∼ 0.57, which is far above the percolation limit. As the magnetic ground state in such a system can be strongly affected by small variations of the 5f localization, we have investigated a set of samples with different x by polarized neutron diffraction and X-ra...
متن کاملابررساناهای دمای بالا- با دید نوترونها
Neutron scattering is proved to be a vital probe in unveiling the magnetic properties of high temperature superconductors (HTSC). Detailed information about the energy and momentum dependence of the magnetic dynamics of HTSC have been obtained directly by this technique. Over the past decade by improving the crystal growth methods, large and high quality single crystals of HTSC, which are ess...
متن کاملMagnetic neutron scattering (invited)
The application of neutron scattering techniques to magnetic problems is reviewed. We will first discuss diffraction techniques used to solve magnetic structures, as well as to measure magnetic form factors, order parameters, critical phenomena, and the scattering from low-dimensional systems. We will also discuss inelastic scattering techniques, including polarized beam methods, utilized to de...
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:
- Physical review letters
دوره 106 1 شماره
صفحات -
تاریخ انتشار 2011