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一类新型二硫纶金属配合物的超导性和超导理论模型 被引量:2
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作者 潘庆才 《天中学刊》 1998年第5期17-21,共5页
报道了1,3-二流-2-硫酮-4,5-二硫酵(1,3-dithiole-2-thione-4,5-dithiolate,简记dmit)金属配合物的超导性;借助与标题配合物结构相似的四硫富瓦烯-四氰基喹喏二甲烷(TTF·TCNQ)电荷转移型化合物的晶体导电模... 报道了1,3-二流-2-硫酮-4,5-二硫酵(1,3-dithiole-2-thione-4,5-dithiolate,简记dmit)金属配合物的超导性;借助与标题配合物结构相似的四硫富瓦烯-四氰基喹喏二甲烷(TTF·TCNQ)电荷转移型化合物的晶体导电模型,阐述了标题配合物超导性的本质特征,讨论了它们的超导性与其结构的关系. 展开更多
关键词 超导 二硫纶 金属配合物 超导理论模型
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The Critical Properties of One—Dimensional Extended Hubbard Model
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作者 WANGZhi-Guo ZHANGYu-Mei 《Communications in Theoretical Physics》 SCIE CAS CSCD 2002年第2期237-242,共6页
In the framework of nonperturbative quantum field theory, the critical phenomena of one-dimensionalextended Hubbard model (EHM) at half-filling are discussed from weak to intermediate interactions. After the EHMbeing ... In the framework of nonperturbative quantum field theory, the critical phenomena of one-dimensionalextended Hubbard model (EHM) at half-filling are discussed from weak to intermediate interactions. After the EHMbeing mapped into two decoupled sine-Gordon models, the ground state phase diagram of the system is derived in anexplicit way. It is confirmed that the coexisting phases appear in different interaction regimes which cannot be foundby conventional theoretical methods. The diagram shows that there are seven different phase regions in the groundstate, which seems not to be the same as previous discussions, especially the boundary between the phase separationand condensed phase regions. The phase transition properties of the model between various phase regions are studied indetail. 展开更多
关键词 one-dimensional extended Hubbard model BOSONIZATION phase diagram coexisting phase
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