TY - JOUR
T1 - Charge order in Kondo lattice systems
AU - Peters, Robert
AU - Hoshino, Shintaro
AU - Kawakami, Norio
AU - Otsuki, Junya
AU - Kuramoto, Yoshio
PY - 2013/4/25
Y1 - 2013/4/25
N2 - Charge order is a commonly observed phenomenon in strongly correlated materials. However, most theories are based on a repulsive intersite Coulomb interaction in order to explain charge order. Here we show that only due to local interactions, charge order is favorable in heavy fermion systems at quarter filling. The driving force is the Kondo effect, which leads to a nonlinear dependence on the filling of the lattice site for the energy gain. We use dynamical mean field theory combined with numerical renormalization group to demonstrate the existence of charge order at quarter filling for a Kondo lattice model.
AB - Charge order is a commonly observed phenomenon in strongly correlated materials. However, most theories are based on a repulsive intersite Coulomb interaction in order to explain charge order. Here we show that only due to local interactions, charge order is favorable in heavy fermion systems at quarter filling. The driving force is the Kondo effect, which leads to a nonlinear dependence on the filling of the lattice site for the energy gain. We use dynamical mean field theory combined with numerical renormalization group to demonstrate the existence of charge order at quarter filling for a Kondo lattice model.
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U2 - 10.1103/PhysRevB.87.165133
DO - 10.1103/PhysRevB.87.165133
M3 - Article
AN - SCOPUS:84877041557
SN - 0163-1829
VL - 87
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 16
M1 - 165133
ER -