论文标题
对3 $ d $ -4 $ f $ f $协调聚合物的磁化高原的本质的见解[dy $ _2 $ cu $ _2 $] $ _ n $从spin-1/2 ising-ising-heisenberg Orthoconal-Dimer-Dimer-Dimer链
Insights into nature of a magnetization plateau of 3$d$-4$f$ coordination polymer [Dy$_2$Cu$_2$]$_n$ from a spin-1/2 Ising-Heisenberg orthogonal-dimer chain
论文作者
论文摘要
详细研究了Ising和Heisenberg Spins的两个不同的陀螺仪因子的基础状态和磁化过程，$ 1/2 $ 1/2 $ 1/2 $ 1/2 $ iSing-Heisenberg正交链链。结果表明，根据磁场，内和二聚体间偶联常数的相互效果，研究的量子自旋链最多表现出多达七个可能的接地态。更具体地说，沮丧和调制的量子抗铁磁阶段是零磁化磁化强度平台的零温度磁化曲线的原因。由于沮丧和调制的量子铁磁相，中间的1/11和5/11-帕拉图斯出现，而中间的9/11-和10/11 plateaus可以归因于量子和经典的铁磁相。有人认为，在高场磁化曲线中观察到3 $ d $ -4 $ f $ f $ heterobimetallic的协调聚合物[\ {dy（hfac）$ _ 2 $ _ 2 $（ch $ _3 $ oh） （H $ _2 $ dmg $ = $ dimethylglyoxime; hhfac $ = $ 1,1,1,1,5,5,5-5-5-HExafluoropentane-2,4-二酮）可以归因于经典和量子的Ferrimagnetic相。
The ground state and magnetization process of an exactly solved spin-$1/2$ Ising-Heisenberg orthogonal-dimer chain with two different gyromagnetic factors of the Ising and Heisenberg spins are investigated in detail. It is shown that the investigated quantum spin chain exhibits up to seven possible ground states depending on a mutual interplay of the magnetic field, intra- and inter-dimer coupling constants. More specifically, the frustrated and modulated quantum antiferromagnetic phases are responsible in zero-temperature magnetization curves for a zero magnetization plateau. The intermediate 1/11- and 5/11-plateaus emerge due to the frustrated and modulated quantum ferrimagnetic phases, while the intermediate 9/11- and 10/11-plateaus can be attributed to the quantum and classical ferrimagnetic phases. It is conjectured that the magnetization plateau experimentally observed in a high-field magnetization curve of 3$d$-4$f$ heterobimetallic coordination polymer [\{Dy(hfac)$_2$(CH$_3$OH)\}$_2$\{Cu(dmg)(Hdmg)\}$_2$]$_n$ (H$_2$dmg $=$ dimethylglyoxime; Hhfac $=$ 1,1,1,5,5,5-hexafluoropentane-2,4-dione) could be attributed to the classical and quantum ferrimagnetic phases.
