Spin Excitations and Momentum Distribution in the Two-Dimensional Extended t-J Model
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概要
- 論文の詳細を見る
The t' and Z"-dejcendences of' the dyr?attaaic?tl spin correl?ttion f'trractiota S(q, ;) of' the 2D t -t' - t" - J rnodel are sttrdied ntrrtaerically lcarsed 011 the Lataczos a't[gorithrn far txx'o holes on 4 x 4sites. In partictzJatr tlae sj>in excitations ?tt q :: ('tv, 7T) IIIH q., ar'e exannined in detail atnd cort?p;tredxvith restrlts of the uaaean-field tlaeory. Tlae sjoin excitations ttrrned ottt to Ice dr?nstically dif['erentbetxx"eeta YBCO(Z' : -0.17, t" :: 0.2) ;trad YBCO(II)(Z" :- -0.5, t" : O)-type, ;rlthotrgh botht3?"pes reprodtzce the sizniJar Fertrti sturf'aces of YBCO ?tnd l?ave tlae sitaailar S(q., w) in tlae raaeatafield theor'y. Ftrrther trtuderstanding of' tlae projcerties of sjcin excitation f'or tlaese txvo choicesof t' ;'tnd t" are jcursued by calcvrlating tlae taaotaaenttrtaa distrilotrtion itt the excited ststtes. Thespir't excitations S(q., w) for YBCO(II)-t.)'pe ?are ,'shoxvn to be of' collective type, xvhile those f'orYBCO appear to be taa;tinly indix'idtrsrl,
- 社団法人日本物理学会の論文
- 1999-01-15
著者
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FUKUYAMA Hidetoshi
Department of Applied Physics, Tokyo University of Science
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Fukuyama Hidetoshi
Department Of Physics Univercsity Of Tokyo
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MIYANAGA Akiharu
Department of Physics,University of Tokyo
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HASEGAWA Yasumasa
Department of Materials Science,Himeji Institute of Technology
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Fukuyama Hidetoshi
Department Of Applied Physics Faculty Of Science Tokyo University Of Science
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Hasegawa Y
Department Of Material Science Graduate School Of Science Himeji Institute Of Technology Ako
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Hasegawa Y
Himeji Inst. Of Technol. Hyogo
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Hasegawa Yasumasa
Department Of Material Science Graduate School Of Material Science University Of Hyogo
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Miyanaga A
Department Of Physics University Of Tokyo
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Hasegawa Yasumasa
Department Of Material Science Graduate School Of Science Himeji Institute Of Technology
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Hasegawa Yasumasa
Department of Material Science, Graduate School of Science, Himeji Institute of Technology
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Fukuyama Hidetoshi
Department of Applied Physics and Research Institute for Science and Technology, Tokyo University of Science, Shinjuku, Tokyo 162-8601, Japan
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