Gapped ground state in a spin- 12 frustrated square lattice
نویسندگان
چکیده
We present a model compound with spin-1/2 frustrated square lattice, in which three ferromagnetic (F) interactions and one antiferromagnetic (AF) compet. Considering the effective spin-1 formed by dominant F dimer, this lattice can be mapped to spatially anisotropic triangular lattice. The magnetization curve exhibits gapped behavior indicative of one-dimensional (1D) AF correlation. In field-induced gapless phase, specific heat magnetic susceptibility show phase transition an ordered state 2D characteristics. These results indicate that Haldane is extended system. demonstrate ground observed originates from one-dimensionalization caused frustration.
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ژورنال
عنوان ژورنال: Physical review
سال: 2021
ISSN: ['0556-2813', '1538-4497', '1089-490X']
DOI: https://doi.org/10.1103/physrevb.104.l060411