混合自旋系统的相变特性是本文的主要讨论内容。
This article mainly discusses the phase transition properties of random transverse field mixed spin ferromagnetic system with crystal field.
近年来，随机量子自旋系统的研究成为人们关注的热点问题之一。
Recently, the study of the random quantum spin systems attracts lots of attention of many researchers.
自旋系统的动力学性质是相变与临界现象研究中非常重要的一个问题。
The dynamical properties of spin systems are very important in the field of phase transitions and critical phenomena.
本文研究了由交换作用耦合起来的有限长铁磁和反铁磁链组成的自旋系统。
The system of spins in a finite ferromagnetic-antiferromagnetic chain, coupled by exchange interaction, is investigated.
本文提出了一种用于描述多脉冲作用下ax自旋系统演化行为的相干图方法。
A method used for describing the evolution behavior of AX spin system under multipulse sequence is introduced.
这也是本文了亮点之一，我们的目的是计算量子自旋系统的关联函数和比热。
This part is the highlight of the thesis, and our purpose here is to evaluate the correlation functions and specific heat of the quantum spin models.
建立以无相互作用的自族为1/2的粒子组成的自旋系统为工质，由两个绝热和两个等温过程组成的量子卡诺制冷循环模型。
The cycle model of a quantum Carnot refrigeration cycle working with many non-interacting spin-1/2 systems and consisting of two isothermal and two adiabatic processes is established.
利用JES -FE1XG型电子自旋共振波谱仪，系统地研究了含金石英与黄铁矿的电子自旋共振(esr)波谱。
In this paper, the ESR (electron spin resonance) spectra of gold bearing quartz and pyrite have been systematically studied by means of JES FE1XG model ESR spectrometer.
而且，电子的自旋极化度与系统的结构参数密切相关，因此通过调整磁条可以调控系统中自旋极化电子的行为。
Moreover, electron-spin polarization are relevant to the structure parameters of the system, so we can control spin-polarized electronic behavior by means of adjusting ferromagnetic stripes.
一个无序自旋玻璃系统可能有许许多多能量最小态或基态构型。
A spin glass system may have many configurations of the same ground-state energy.
此外，我们研究了在三种不同形式的自旋轨道耦合下一维弹道系统中的自旋进动。
Besides, we study the spin precession in one-dimensional ballistic system with three different forms of spin-orbit coupling.
当左右电子库之间存在偏压时，通过对系统的自旋电流与电荷流公式的分析，得到系统中只存在电荷流而没有自旋电流的条件。
It is discovered that when there is bias between the left and right reservoirs, we can get the condition of system with only charge current.
通常的自旋流定义在描述自旋-轨道耦合系统中的自旋输运是不完整的与非物理的。
The conventional definition of spin current is incomplete and unphysical in describing spin transport in systems with spin-orbit coupling.
非均匀颗粒系统呈现的磁电阻效应与电子在两相颗粒界面的自旋相关散射有关。
The room magnetoresistance effect is largely enhanced in such an inhomogeneous granular system due to the spin dependent scattering of electrons at the interface of the two phases.
计算结果表明，自旋-声子耦合相互作用可以使系统建立一个新的稳定基态。
The calculated results show that a new stable ground state can be developed on account of spin phonon coupling.
此外，对系统中的电荷密度和自旋密度分布受非最近邻电子跳跃相互作用和电-声耦合的影响情况亦进行了讨论。
Moreover, the influences of the non-nearest neighbor hopping interactions and electron-phonon coupling on the distribution of the charge density and spin density are also discussed.
应用线性自旋波的理论和格林函数运动方程技术，利用数值计算的方法得到铁磁-反铁磁双层系统的低温比热。
Using spin wave theory and the equation of motion technique for the Green function, specific heat of ferromagnetic antiferromagnetic double layers at low temperature is investigated.
巨磁阻效应的发现，导致了一个如何正确看待非均匀系统中磁输运性质的问题，并使电子输运状况依赖于自旋内禀属性的物理观念逐渐形成。
The discovery of giant magnetoresistance effect has attracted much attention to research of magnetic transport in inhomogeneous systems, which depends on spin of electrons.
本文综述了有关一般玻璃系统零点剩余熵研究的新进展，同时介绍了自旋玻璃系统的熵冻结问题。
This paper reviews the new progress in the residual entropy of glass systems and the entropy -freezing in spin-glass systems and proposes a new explanations of the existence of residual entropy.
特别是随着时间的演化，系统的平均自旋方向的分布和摆动也与初态所处的空间结构有着密切的联系。
In particular, with time evolution, distribution and swing of the mean spin direction is closely related to the structure of the space where the initial coherent state centred in.
结果表明 ，系统具有镜面反射对称性也是导致自旋宇称效应的原因。
The result shows that the mirror reflection symmetry of the system can also cause SPE.
自旋压缩意味着系统存在纠缠，同时意味着可以得到更高精度的测量。
Spin squeezing means the existence of entanglement in the system, at the same time means that we can get more high-precision measurements.
结果表明，当不计入自旋轨道耦合时，如果系统具有平方色散关系，那么即使没有杂质存在，该系统的SU(2)自旋电导率也依然为零。
It is shown that if the system possesses the parabolic dispersion relation in the absence of the spin-orbit coupling, the SU (2) spin conductivity still vanishes even without the impurities.
将挠率场应用于非共线系统得到了适用于非共线磁系统的挠率-自旋-密度泛函理论（TSDFT）。
The torsion and spin-density-functional theory (SDFT) was given by adding torsion fields to the non-collinear magnetic system.
对双层铁磁薄膜构成的系统，考虑界面铁磁性和反铁磁性耦合对自旋波色散关系、波形演化及共振的影响。
Considering the interface couplings (ferromagnetic coupling and antiferromagnetic coupling), the spin-wave dispersion relations, wave forms and resonant spectra in ferromagnetic bilayers are studied.
利用微扰论中的图形技术讨论了层状准二维无序电子系统中自旋轨道散射效应的有关问题。
Spin orbit scattering effects in a layered quasi 2d disordered electron system have been investigated by the diagrammatic techniques in perturbation theory.
在文章的最后部分分析了自旋翻转对系统抽运电流的影响，得出自旋翻转可以明显得增大抽运电流。
In the last part, we analyze the influence of spin flip on the spin current through the system, discovering that the spin flip could enhance the spin current.
通过对牵引系统的结构及其受力分析，指出了水平连铸系统运行中棒料“自旋”运动形成的原因，并提出了有效抑制自旋运动的改进方案。
Through analyzing structure and stress of the traction system, the reason and improvement scheme of bar stock "spin" in the operation of the horizontal continuous casting system.
通过对牵引系统的结构及其受力分析，指出了水平连铸系统运行中棒料“自旋”运动形成的原因，并提出了有效抑制自旋运动的改进方案。
Through analyzing structure and stress of the traction system, the reason and improvement scheme of bar stock "spin" in the operation of the horizontal continuous casting system.
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