Nonlinear σ model treatment of quantum antiferromagnets in a magnetic field
نویسندگان
چکیده
منابع مشابه
Magnetic-Field Induced Quantum Phase Transitions in Triangular-Lattice Antiferromagnets
Cs2CuBr4 and Ba3NiSb2O9 are magnetically described as quasi-two-dimensional triangular-lattice antiferromagnets with spin1 2 and 1, respectively. We show that both systems exhibit a magnetization plateau at one-third of the saturation magnetization Ms due to the interplay of spin frustration and quantum fluctuation. In Cs2CuBr4 that has a spatially anisotropic triangular lattice, successive mag...
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ژورنال
عنوان ژورنال: Annalen der Physik
سال: 2000
ISSN: 0003-3804,1521-3889
DOI: 10.1002/(sici)1521-3889(200002)9:2<133::aid-andp133>3.0.co;2-z