Anderson-Kondo Lattice Hamiltonian from the Anderson-Lattice Model: A Modified Schrieffer-Wolff Transformation and the Effective Exchange Interactions
نویسندگان
چکیده
منابع مشابه
Theory of the Anderson Impurity Model: The Schrieffer–Wolff Transformation Reexamined
We test the method of infinitesimal unitary transformations recently introduced by Wegner on the Anderson single impurity model. It is demonstrated that infinitesimal unitary transformations in contrast to the Schrieffer Wolff transformation allow the construction of an effective Kondo Hamiltonian consistent with the established results in this well understood model. The main reason for this is...
متن کامل0 Rigorous Schrieffer - Wolff transformation for the Anderson impurity model Gilles Poirot
With the help of computer algebra, I devise an exact unitary transforma-tion for the Anderson impurity model which allows to kill the hybridizationterm in the slightly simplified case of zero chemical potential. Then I computeexplicitly the outcome of this transformation. This is a rigorous version of thewell known Schrieffer-Wolff transformation. It should be possible to tr...
متن کاملCollective Kondo effect in the Anderson–Hubbard lattice
The periodic Anderson model is extended by switching on a Hubbard U for the conduction electrons. We use the Gutzwiller variational method to study the nearly integral valent limit. The lattice Kondo energy contains the U-dependent chemical potential of the Hubbard subsystem in the exponent, and the correlation-induced band narrowing in the prefactor. Both effects tend to suppress the Kondo sca...
متن کاملCorrelations Estimates in the Lattice Anderson Model ∗
We give a new proof of correlation estimates for arbitrary moments of the resolvent of random Schrödinger operators on the lattice that generalizes and extends the correlation estimate of Minami for the second moment. We apply this moment bound to obtain a new n-level Wegner-type estimate that measures eigenvalue correlations through an upper bound on the probability that a local Hamiltonian ha...
متن کاملScaling between periodic Anderson and Kondo lattice models
R. Dong,1 J. Otsuki,2,3 and S. Y. Savrasov1 1Department of Physics, University of California, Davis, California 95616, USA 2Department of Physics, Tohoku University, Sendai 980-8578, Japan 3Theoretical Physics III, Center for Electronic Correlations and Magnetism, Institute of Physics, University of Augsburg, D-86135 Augsburg, Germany (Received 19 November 2012; revised manuscript received 19 F...
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: 2014
ISSN: 0587-4246,1898-794X
DOI: 10.12693/aphyspola.126.a-100