Gapped ground state in a spin-1/2 frustrated square lattice
| Autor: | Toshiro Sakakibara, Y. Iwasaki, Y. Kono, S. Shimono, N. Uemoto, Yuko Hosokoshi, Takeaki Yajima, Tatsuya Okubo, Hironori Yamaguchi, Shunichiro Kittaka |
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| Rok vydání: | 2021 |
| Předmět: |
Physics
Condensed Matter - Materials Science Phase transition Condensed matter physics Strongly Correlated Electrons (cond-mat.str-el) media_common.quotation_subject Frustration Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences Magnetic susceptibility Square lattice Condensed Matter - Strongly Correlated Electrons Ferromagnetism Antiferromagnetism Hexagonal lattice Condensed Matter::Strongly Correlated Electrons Ground state media_common |
| DOI: | 10.48550/arxiv.2108.12761 |
| Popis: | We present a model compound with a spin-1/2 frustrated square lattice, in which three ferromagnetic (F) interactions and one antiferromagnetic (AF) compet. Considering the effective spin-1 formed by the dominant F dimer, this square lattice can be mapped to a spin-1 spatially anisotropic triangular lattice. The magnetization curve exhibits gapped behavior indicative of a dominant one-dimensional (1D) AF correlation. In the field-induced gapless phase, the specific heat and magnetic susceptibility show a phase transition to an ordered state with 2D characteristics. These results indicate that the spin-1 Haldane state is extended to the 2D system. We demonstrate that the gapped ground state observed in the present spin-1/2 frustrated square lattice originates from the one-dimensionalization caused by frustration. Comment: arXiv admin note: text overlap with arXiv:2106.12126 |
| Databáze: | OpenAIRE |
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