Kondo Screening Effect and Ferromagnetic Order in UCu2Si2
نویسندگان
چکیده
منابع مشابه
Kondo effect in quantum dots coupled to ferromagnetic leads.
We study the Kondo effect in a quantum dot coupled to ferromagnetic leads and analyze its properties as a function of the spin polarization of the leads. Based on a scaling approach, we predict that for parallel alignment of the magnetizations in the leads the strong-coupling limit of the Kondo effect is reached at a finite value of the magnetic field. Using an equation of motion technique, we ...
متن کاملKondo effect in 3d-host ferromagnetic Sm1−xCexMn2Ge2
Lattice, Ce L3-edge, magnetic susceptibility, and electrical resistivity results on polycrystalline Sm1−xCexMn2Ge2 (0≤ x≤ 1) compound series are presented. The lattice parameters a and c increase almost linearly with the increase of Ce concentration x. The Ce-L3 X-ray absorption spectra indicate that the Ce in this series is nearly trivalent, and Ce valence decreases slightly with the increase ...
متن کاملferromagnetic Kondo model for manganites.
Spin dynamics in the generalized ferromagnetic Kondo model for manganites. Dynamical spin susceptibility is calculated for the generalized ferromagnetic Kondo model which describes itinerant e g electrons interacting with localized t 2g electrons with antiferromagnetic coupling. The calculations done in the mean field approximation show that the spin-wave spectrum of the system in ferromagnetic...
متن کاملMagnons in the ferromagnetic Kondo - lattice model
The magnetic properties of the ferromagnetic Kondo-lattice model (FKLM) are investigated. Starting from an analysis of the magnon spectrum in the spin-wave regime, we examine the ferromagnetic stability as a function of the occupation of the conduction band n and the strength J of the coupling between the localised moments and the conduction electrons. From the properties of the spin-wave stiff...
متن کاملArrested Kondo effect and hidden order in URu2Si2
Complex electronic matter shows subtle forms of selforganization, which are almost invisible to the available experimental tools. One prominent example is provided by the heavy-fermion material URu2Si2. At high temperature, the 5f electrons of uranium carry a very large entropy. This entropy is released at 17.5 K by means of a second-order phase transition1 to a state that remains shrouded in m...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Acta Physica Polonica A
سال: 2012
ISSN: 0587-4246,1898-794X
DOI: 10.12693/aphyspola.121.1023