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Theory of magnetic excitations in the Kondo lattice
R. Eder
We present a theory for the spin excitations of the Kondo lattice. We derive an effective Hamiltonian, which describes Fermionic spin 1/2 charge fluctuations interacting with Boson…
Hole Photoproduction in Insulating Copper Oxide
O. Sushkov, G. Sawatzky, R. Eder +1
To explain the experimental spectra for angle resolved photoemission we consider a modified t-J model. The modified model includes next nearest (t') and next next nearest (t'') hop…
Low energy excitations of the t-J model in 1D and 2D
R. Eder, Y. C. Chen, H. Q. Lin +3
We present an exact diagonalization study of the low energy singlet and triplet states for both 1D and 2D t-J model. A scan of the parameter ratio J/t shows that for nearly all low…
Exact Diagonalization Study of Strongly Correlated Electron Models: Hole pockets and shadow bands in the doped t-J model
Y. Ohta, R. Eder
A detailed exact-diagonalization study is made for the doping dependence of the single-particle spectral function and momentum distribution function of…
Spin dynamics of the doped t-J model
R. Eder, Y. Ohta
We present a new method for studying the low energy excitations in finite cluster systems and apply it to clarify the nature of the low energy spin excitations in the moderately do…