28 citations · 66 across the 9 of their papers we have counts for
Showing 2001Show all
2 papers · 1 filter
cond-mat.str-el2001★ 11 cited
Low Energy Singlets in the Excitation Spectrum of the Spin Tetrahedra System Cu_2Te_2O_5Br_2
P. Lemmens, K. Y. Choi, A. Ionescu +8
Low energy Raman scattering of the s=1/2 spin tetrahedra system Cu_2Te_2O_5Br_2 is dominated by an excitation at 18 cm^{-1} corresponding to an energy E_S=0.6Δ, with Δthe spin gap…
cond-mat.str-el2001★ 15 cited
Single-hole dynamics in the half-filled two-dimensional Kondo-Hubbard model
M. Feldbacher, C. Jurecka, F. F. Assaad +1
We consider the Kondo lattice model in two dimensions at half filling. In addition to the fermionic hopping integral and the superexchange coupling the role of a Coulomb re…