Effective spin-1/2 exchange model for Tb_2Ti_2O_7

S. H. Curnoe

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Effective spin-1/2 exchange model for Tb_2Ti_2O_7

机译：Tb_2Ti_2O_7的有效spin / 1/2交换模型

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Fits were performed to diffuse neutron scattering intensity patterns to determine anisotropic exchange coupling constants for Tb_2Ti_2O_7. A symmetry-preserving map between non-Kramers Tb~(3+) states and spin-1/2 states is described. Using second-order perturbation theory, the Tb~(3+) nearest-neighbor exchange model is mapped to a spin-1/2 model, and the anisotropic exchange coupling constants for this model are calculated. Tb_2Ti_2O_7 is found to be a spin-1/2 spin ice with corrections arising from transverse exchange terms.

机译：进行拟合以扩散中子散射强度模式，以确定Tb_2Ti_2O_7的各向异性交换耦合常数。描述了非Kramers Tb〜（3+）状态与spin-1 / 2状态之间的对称对称图。利用二阶扰动理论，将Tb〜（3+）最近邻交换模型映射为spin-1 / 2模型，并计算了该模型的各向异性交换耦合常数。发现Tb_2Ti_2O_7是自旋1/2的自旋冰，其校正来自横向交换项。

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来源
《Physical review》 |2013年第1期|014429.1-014429.5|共5页
作者
S. H. Curnoe;
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作者单位

Department of Physics & Physical Oceanography, Memorial University of Newfoundland, St. John's, Newfoundland & Labrador, A1B 3X7, Canada;

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正文语种 eng
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quantized spin models; crystal-field theory and spin hamiltonians;

机译：量化自旋模型晶体场理论与自旋哈密尔顿;

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专利

1. Effective spin-(1/2) exchange interactions in Tb_2Ti_2O_7 [J] . S. P. Mukherjee, S. H. Curnoe Physical review . 2014,第21期

机译：Tb_2Ti_2O_7中有效的自旋（1/2）交换相互作用
2. The magnetic properties of spin-1/2 and spin-1 Ising models in an applied magnetic field by introducing the effective-field approximation [J] . Canpolat Y, Torgursul A, Polat H Physica Scripta: An International Journal for Experimental and Theoretical Physics . 2007,第6期

机译：通过引入有效场近似，在施加的磁场中自旋1/2和自旋1 Ising模型的磁性
3. Spin Bose-Metal and Valence Bond Solid Phases in a Spin-1/2 Model with Ring Exchanges on a Four-Leg Triangular Ladder [J] . Matthew S. Block, D.N. Sheng, Olexei I. Motrunich, Physical review letters . 2011,第15期

机译：自旋1/2模型中具有环交换的自旋1/2模型中的自旋玻色金属和价键固相
4. Dynamic Phase Transitions In The Spin-1/2 Metamagnetic Ising System Within The Effective-Field Theory [C] . B. Deviren, M. Keskin International Symposium on Frontiers of Fundamental Physics . 2010

机译：在有效场理论中，旋转1/2个体磁性读取系统中的动态相变
5. Magnetic Investigation of Effective Spin-1/2 Magnetic Insulators Based on 3d and 4f Magnetic Ions =Magnetische Untersuchung des effektiven Spin-1/2 magnetisch Isolatoren auf der Basis von magnetischen 3d- und 4f-Ionen [D] . Samartzis, Alexandros. 2020

机译：基于3D和4F磁离子的有效旋转1/2磁绝缘子的磁性研究=基于磁3D和4F离子的有效自旋-1 / 2磁隔离器的磁检验
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. Effective spin-1/2 exchange interactions in Tb$_2$Ti$_2$O$_7$ [O] . Mukherjee, S. P., Curnoe, S. H. 2014

机译：在Tb $ _2 $ Ti $ _2 $ O $ _7 $中有效的spin-1/2交换互动
8. FIDEL - an optical model search code with spin-orbit terms for spin-1/2 and spin-1 particles [R] . D. M. Rosalky 1970

机译：FIDEL - 一种光学模型搜索代码，具有spin-1/2和spin-1粒子的自旋轨道项

Effective spin-1/2 exchange model for Tb_2Ti_2O_7

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