Magnetic phase transitions in the triangular-lattice spin-1 dimer compound K2Ni2(SeO3)3

Yue, Lei1; Lu, Ziyou1; Yan, Kun2,3,4; Wang, Le5,6; Guo, Shu5,6; Guo, Ruixin5,6; Chen, Peng7; Chen, Xiaobin2,3,4; Mei, Jia-Wei1,5,8

2024-06-20

10.1103/PhysRevB.109.214430

PHYSICAL REVIEW B   影响因子和分区

2469-9950

2469-9969

In our study, we conduct magnetization and heat capacity measurements to investigate field-induced magnetic phase transitions within the newly synthesized compound K 2 Ni 2 (SeO 3 ) 3 , a spin-1 dimer system arranged on a triangular lattice. From our first-principles simulations, we determine that the spin system in K 2 Ni 2 (SeO 3 ) 3 can be represented as a two-dimensional triangular-lattice spin-1 dimer model, including an intra-dimer exchange of J 1 = 0 . 32 meV, an inter-dimer exchange of J 2 = 0 . 79 meV, and an easy-axis anisotropy of D = 0 . 14 meV. The presence of easy-axis magnetic anisotropy explains the distinct magnetic phase diagrams observed under c-axis directional and in-plane magnetic fields. Notably, our investigation unveils a two-step phase transition with the magnetic field aligned with the c direction. Our findings yield valuable insights into the magnetic phase transitions inherent to geometrically frustrated magnetic systems featuring dimer structures.

SCI ; EI

英语

第一 ; 通讯

National Key Research and Development Program of China[2021YFA1400400] ; National Natural Science Foundation of China[12204223] ; Shenzhen Fundamen- tal Research Program["JCYJ20220818100405013","JCYJ20230807093204010"] ; Guangdong Innovative and Entrepreneurial Research Team Program[2017ZT07C062] ; Shenzhen Key Laboratory of Advanced Quantum Functional Materials and Devices[ZDSYS20190902092905285] ; Guangdong Basic and Applied Basic Research Foundation[2020B1515120100] ; Shenzhen Science and Technol- ogy Program[RCYX20221008092848063]

Materials Science ; Physics

Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:001269492900007

AMER PHYSICAL SOC

PHYSICS

Web of Science

1.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
2.Harbin Inst Technol, Sch Sci, Shenzhen 518055, Peoples R China
3.Harbin Inst Technol, State Key Lab Tunable Laser Technol, Shenzhen 518055, Peoples R China
4.Harbin Inst Technol, Minist Ind & Informat Technol, Key Lab Micronano Optoelect Informat Syst, Shenzhen 518055, Peoples R China
5.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Shenzhen 518055, Peoples R China
6.Int Quantum Acad, Shenzhen 518048, Peoples R China
7.Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China
8.Southern Univ Sci & Technol, Shenzhen Key Lab Adv Quantum Funct Mat & Devices, Shenzhen 518055, Peoples R China

Yue, Lei,Lu, Ziyou,Yan, Kun,et al. Magnetic phase transitions in the triangular-lattice spin-1 dimer compound K2Ni2(SeO3)3[J]. PHYSICAL REVIEW B,2024,109(21).

Yue, Lei.,Lu, Ziyou.,Yan, Kun.,Wang, Le.,Guo, Shu.,...&Mei, Jia-Wei.(2024).Magnetic phase transitions in the triangular-lattice spin-1 dimer compound K2Ni2(SeO3)3.PHYSICAL REVIEW B,109(21).

Yue, Lei,et al."Magnetic phase transitions in the triangular-lattice spin-1 dimer compound K2Ni2(SeO3)3".PHYSICAL REVIEW B 109.21(2024).