A decorated lattice is suggested and the Ising model on it with three kinds of interactions K;,K;,and K;is studied.Using an equivalent transformation,the square decorated Ising lattice is transformed into a regular squareIsing lattice with nearest-neighbor,next-nearest-neighbor,and four-spin interactions,and the critical fixed point is foundat K;=0.5769,K;=-0.0671,and K;=0.3428,which determines the critical temperature of the system.It is alsofound that this system and the regular square Ising lattice,and the eight-vertex model belong to the same universalityclass.
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Sun Yat Sen Univ, Sch Phys, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R ChinaSun Yat Sen Univ, Sch Phys, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China
Zhou, Chengkang
Feng, Yuanwei
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Sun Yat Sen Univ, Sch Phys, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R ChinaSun Yat Sen Univ, Sch Phys, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China
Feng, Yuanwei
Ruan, Jiawei
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Sun Yat Sen Univ, Sch Phys, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China
Nanjing Univ, Sch Phys, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China
Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R ChinaSun Yat Sen Univ, Sch Phys, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China
Ruan, Jiawei
Yao, Dao-Xin
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Sun Yat Sen Univ, Sch Phys, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R ChinaSun Yat Sen Univ, Sch Phys, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China