Exploring the spin- 1/2 frustrated square lattice model with high-field magnetization studies

Alexander A. Tsirlin; Burkhard Schmidt; Yurii Skourski; Ramesh Nath; Christoph Geibel; Helge Rosner

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Exploring the spin- 1/2 frustrated square lattice model with high-field magnetization studies

机译：通过高场磁化研究探索自旋1/2挫折方格模型

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We report on high-field magnetization measurements for a number of layered vanadium phosphates that were recently recognized as spin-1/2 frustrated square lattice compounds with ferromagnetic nearest-neighbor couplings (J_1) and antiferromagnetic next-nearest-neighbor couplings (J_2). The saturation fields of the materials lie in the range from 4 to 24 T and show excellent agreement with the previous estimates of the exchange couplings deduced from low-field thermodynamic measurements. The consistency of the high-field data with the regular frustrated square lattice model provides experimental evidence for a weak impact of spatial aniso-tropy on the nearest-neighbor couplings in layered vanadium phosphates. The variation in the J_2/J_1 ratio within the compound family facilitates the experimental access to the evolution of the magnetization curve upon the change in the frustration magnitude. Our results support the recent theoretical prediction by Thalmeier et al. [Phys. Rev. B 77, 104441 (2008)] arid give evidence for the enhanced bending of the magnetization curves due to the increasing frustration of the underlying spin system.

机译：我们报告了一些层状磷酸钒的高场磁化测量结果，这些层状钒钒最近被认为是具有铁磁最近邻偶合（J_1）和反铁磁次近邻偶合（J_2）的自旋1/2失意方格化合物。材料的饱和场在4至24 T的范围内，与以前根据低场热力学测量得出的交换耦合估计值非常吻合。高场数据与规则的挫折方格模型的一致性为层状磷酸钒中空间各向异性对最邻近耦合的弱影响提供了实验证据。化合物族中J_2 / J_1比率的变化有助于在挫折幅度变化时通过实验获得磁化曲线的演变。我们的结果支持Thalmeier等人的最新理论预测。 [物理Rev. B 77，104441（2008）]并提供了证据证明由于下方自旋系统的受挫程度增加而使磁化曲线的弯曲增强。

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来源
《Physical review》 |2009年第13期|132407.1-132407.4|共4页
作者
Alexander A. Tsirlin; Burkhard Schmidt; Yurii Skourski; Ramesh Nath; Christoph Geibel; Helge Rosner;
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作者单位

Max Planck Institute for Chemical Physics of Solids, Noethnitzer Strasse 40, 01187 Dresden, Germany Department of Chemistry, Moscow State University, 119991 Moscow, Russia;

Max Planck Institute for Chemical Physics of Solids, Noethnitzer Strasse 40, 01187 Dresden, Germany;

Dresden High Magnetic Field Laboratory, Forschungszentrum Dresden-Rossendorf, 01314 Dresden, Germany;

Max Planck Institute for Chemical Physics of Solids, Noethnitzer Strasse 40, 01187 Dresden, Germany Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA;

Max Planck Institute for Chemical Physics of Solids, Noethnitzer Strasse 40, 01187 Dresden, Germany;

Max Planck Institute for Chemical Physics of Solids, Noethnitzer Strasse 40, 01187 Dresden, Germany;

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studies of specific magnetic materials; quantized spin models; exchange and superexchange interactions;

机译：研究特定的磁性材料;量化自旋模型交换和超交换交互;

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1. Order-from-disorder effect in the exactly solved mixed spin-(1/2, 1) Ising model on fully frustrated triangles-in-triangles lattices [J] . Stre?ka J., ?isárová J. Physica, A. Statistical mechanics and its applications . 2013,第22期

机译：在完全挫折的三角形三角形网格中，精确求解的混合自旋（1/2，1）Ising模型中的从无序效应
2. Weak universal critical behaviour of the mixed spin-(1/2, S) Ising model on the Union Jack (centered square) lattice: integer versus half-odd-integer spin-S case [J] . Strecka J, Canova L, Dely J Physica status solidi, B. Basic research . 2006,第8期

机译：Union Jack（居中正方形）晶格上混合自旋（1/2，S）Ising模型的弱通用临界行为：整数对半奇数Spin-S情况
3. Reply to 'Comment on 'Gapless spin liquid ground state of the spin- 1/2 J_1-J_2 Heisenberg model on square lattices' ' [J] . Wen-Yuan Liu, Shaojun Dong, Chao Wang, Physical review . 2020,第15期

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4. Phase diagram of the frustrated J_1 - J_2 transverse field Ising model on the square lattice [C] . M. Sadrzadeh, A. Langari International Conference on Low Temperature Physics . 2017

机译：令人沮丧的J_1 - J_2横向场在方格子上的相图
5. Numerical study of the extended Hubbard model on geometrically frustrated lattices. [D] . Su, Shiquan. 2008

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6. Investigation of possible phase transition of the frustrated spin-1/2 J1-J2-J3 model on the square lattice [O] . Ai-Yuan Hu, Huai-Yu Wang -1

机译：方格上沮丧的spin-1 / 2 J1-J2-J3模型可能的相变研究
7. Exploring the spin-1/2 frustrated square lattice model with high-field magnetization measurements [O] . Tsirlin, Alexander A., Schmidt, Burkhard, Skourski, Yurii, 2009

机译：探索具有高场的spin-1/2挫折方格模型磁化测量
8. Self-Dual Cluster Renormalization Group Approach for the Square Lattice Ising Model Specific Heat and Magnetization [R] . Martin, H. O., Tsallis, C. 1981

机译：平方格子模型比热和磁化的自对偶聚类重整化群方法

Exploring the spin- 1/2 frustrated square lattice model with high-field magnetization studies

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