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Chinese Physics, 2000, Vol. 9(8): 615-618    DOI: 10.1088/1009-1963/9/8/012
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

CHARGE AND SPIN GAPS IN THE DIMERIZED HUBBARD MODEL

Ding Guo-hui (丁国辉), Ye Fei (叶飞), Xu Bo-wei (许伯威)
Department of physics, Shanghai Jiaotong university, Shanghai 200030, China
Abstract  By using the bosonization and renormalization group methods, we have studied the low energy physical properties in the one-dimensional dimerized Hubbard model. The formation of charge and spin gaps is investigated both for the half-filled electron band and away from the half-filled band. The scaling laws of the charge and spin gaps with the dimerization parameter $\varDelta$ and the repulsive interaction strength U are obtained.
Keywords:  dimerized hubbard model      charge and spin gaps  
Received:  03 March 2000      Accepted manuscript online: 
PACS:  75.10.Lp (Band and itinerant models)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 19975031) and the RFDP (Grant No. 199024833).

Cite this article: 

Ding Guo-hui (丁国辉), Ye Fei (叶飞), Xu Bo-wei (许伯威) CHARGE AND SPIN GAPS IN THE DIMERIZED HUBBARD MODEL 2000 Chinese Physics 9 615

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