The Kondo lattice model from strong-coupling viewpoint
نویسندگان
چکیده
منابع مشابه
The Kondo lattice model from strong-coupling viewpoint
We study the magnetic excitation spectrum of the two-dimensional (2D) squarelattice S=1/2 Kondo lattice model at finite (hole) doping, by representing the Hamiltonian in terms of a set of local excitations. The location of the paramagneticantiferromagnetic phase boundary at T=0 is determined.
متن کاملFrom Kondo Model and Strong Coupling Lattice Qcd to the Isgur-wise Function
Isgur-Wise functions parametrise the leading behaviour of weak decay form factors of mesons and baryons containing a single heavy quark. The form factors for the quark mass operator are calculated in strong coupling lattice QCD, and Isgur-Wise functions extracted from them. Based on renormalisation group invariance of the operators involved, it is argued that the Isgur-Wise functions would be t...
متن کامل0 Strong Coupling Approach to the Supersymmetric Kondo Model
We carry out the strong coupling expansion for the SU (N) Kondo model where the impurity spin is represented by a L-shaped Young tableau. Using second order perturbation theory around the strong coupling fixed point it is shown that when the antisymmetric component of the Young-tableau contains more than N/2 entries, the strong-coupling fixed point becomes unstable to a two-stage Kondo effect. ...
متن کاملStrong Coupling Approach to the Supersymmetric Kondo Model
We carry out the strong coupling expansion for the SU (N) Kondo model where the impurity spin is represented by a L-shaped Young tableau. Using second order perturbation theory around the strong coupling fixed point it is shown that when the antisymmetric component of the Young-tableau contains more than N/2 entries, the strong-coupling fixed point becomes unstable to a two-stage Kondo effect. ...
متن کاملKondo Engineering : from Single Kondo Impurity to the Kondo Lattice
In the first step, experiments on a single cerium or ytterbium Kondo impurity reveal the importance of the Kondo temperature by comparison to other type of couplings like the hyperfine interaction, the crystal field and the intersite coupling. The extension to a lattice is discussed. Emphasis is given on the fact that the occupation number n f of the trivalent configuration may be the implicit ...
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: Physica B: Condensed Matter
سال: 2002
ISSN: 0921-4526
DOI: 10.1016/s0921-4526(01)01487-9