Competition Between Two Ordering Processes in Two-Dimensional Doped Antiferromagnets
AN Jin1,2, GONG Chang-De1,3, LIN Hai-Qing2
1National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093
2Department of Physics, The Chinese University of Hong Kong, Hong Kong
3CCAST (World Laboratory), P.O. Box 8730, Beijing 100080
Competition Between Two Ordering Processes in Two-Dimensional Doped Antiferromagnets
AN Jin1,2;GONG Chang-De1,3;LIN Hai-Qing2
1National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093
2Department of Physics, The Chinese University of Hong Kong, Hong Kong
3CCAST (World Laboratory), P.O. Box 8730, Beijing 100080
Abstract： We provide a Landau theory of the coupled charge density wave and spin density wave order parameters to investigate the possibility of coexistence or competition between the two ordering processes occurring in the two-dimensional doped antiferromagnet. We find that the two ordering processes can coexist only in a certain region of coupling parameters, andthe one with lower transition temperature can only coexist together with the other one with higher transition temperature and can not be stabilized separately. Phase diagrams in different situations are given.
AN Jin;GONG Chang-De;LIN Hai-Qing. Competition Between Two Ordering Processes in Two-Dimensional Doped Antiferromagnets[J]. 中国物理快报, 2001, 18(3): 419-421.
AN Jin, GONG Chang-De, LIN Hai-Qing. Competition Between Two Ordering Processes in Two-Dimensional Doped Antiferromagnets. Chin. Phys. Lett., 2001, 18(3): 419-421.
2001, Vol. 18 
