D-Wave Kondo Problem in a Square Tight-Bounding Lattice
YANG Kai-Hua1, SONG Bo2, WANG Yu-Peng2, HAN Ru-Shan3
1Institute of Microelectronics, Peking University, Beijing 100871
2Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080
3Department of Physics, Peking University, Beijing 100871
D-Wave Kondo Problem in a Square Tight-Bounding Lattice
YANG Kai-Hua1;SONG Bo2;WANG Yu-Peng2;HAN Ru-Shan3
1Institute of Microelectronics, Peking University, Beijing 100871
2Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080
3Department of Physics, Peking University, Beijing 100871
Abstract： A Kondo model in a square tight-bonding lattice of conduction electrons is considered. The Kondo interaction takes a d-wave. Using mean-field theory and numerical simulations, it is found that there is a pseudo-gap for the impurity density of states at the Fermi level. Numerical results also show that the exponents of the low-temperature thermodynamic quantities are non-universal but dependent on the interaction.
YANG Kai-Hua;SONG Bo;WANG Yu-Peng;HAN Ru-Shan. D-Wave Kondo Problem in a Square Tight-Bounding Lattice
[J]. 中国物理快报, 2002, 19(1): 111-113.
YANG Kai-Hua, SONG Bo, WANG Yu-Peng, HAN Ru-Shan. D-Wave Kondo Problem in a Square Tight-Bounding Lattice
. Chin. Phys. Lett., 2002, 19(1): 111-113.
2002, Vol. 19 
