D-Wave Kondo Problem in a Square Tight-Bounding Lattice

Chin. Phys. Lett.

2002, Vol. 19

Issue (1): 111-113 DOI:

Original Articles

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

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YANG Kai-Hua, SONG Bo, WANG Yu-Peng et al 2002 Chin. Phys. Lett. 19 111-113

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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.

Keywords: 71.15.Fv 75.30.Hx 71.23.-k 05.70.-a

Published: 01 January 2002

PACS:	71.15.Fv
	75.30.Hx	(Magnetic impurity interactions)
	71.23.-k	(Electronic structure of disordered solids)
	05.70.-a	(Thermodynamics)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2002/V19/I1/0111

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