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spin correlation
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  自旋关联
     The effect on spin correlation of Cu~ 2+ with Zn doping was indicated through Electron Paramagnetic Resonance experiment.
     电子顺磁共振实验(EPR)揭示了Zn掺杂对Cu2+的自旋关联行为的影响.
短句来源
     ESR reveal the influence of Al doping on spin correlation.
     电子顺磁共振实验(EPR)揭示了不同含量的Al掺杂对Cu2+的自旋关联行为的影响.
短句来源
     Series of samples of double-doped La-{1.85-x}Sr-{0.15x}Cu-{1-x}Fe-xO-4 (0≤x≤1) system were prepared by solid state reaction method. The structure, spin correlation and transport properties were studied by means of X-ray diffraction, resistivity, thermoelectric power and electron spin resonance (ESR).
     我们采用固相合成法成功地制备出单相双掺杂系列样品La1 .85-xSr0 .1 5+xCu1 -xFexO4(0≤x≤ 1 ) ,并用X光衍射 ,电阻率 ,热电势 ,电子自旋共振等实验手段对样品的结构 ,自旋关联行为和输运性质进行了系统地研究 .
短句来源
     Spin correlation of the hidden variable theory,spin correlation of quantum me-chanics,Bell theorem and its meaning are discussed in detail.
     本文详细地讨论了隐变量自旋关联、量子力学自旋关联、Bell定理及其意义.
短句来源
     It is shown that although the second neighbor hopping is systematically accompanied with the increasing of the weight of the incommensurate peaks in the dynamical spin structure factor, for the physical reasonable small value of t′, the qualitative behavior of the incommensurate spin correlation in the t-t′-J model is the same as in the case of t-J model.
     结果表明 ,虽然电子次近邻跃迁项使得自旋结构因子的非公度峰强度增加 ,但对物理上合理的、较小的t′值 ,t t′ J模型的非公度自旋关联与t J模型定性一致 .
短句来源
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  自旋相关
     Based on the intraatomic electron correlation and the interatomic electron and spin correlation, the local approach has been used to the Hubbard model.
     本文基于同一格点的电子相关和最近邻格点间的电荷相关及自旋相关,把局域方法的级数展开用于Hubbard模型。
短句来源
     Also, the significance of Bell's work is established, with the aid of "the hidden variable expression" of "the spin correlation function" or another formula, an artificial relation between these unreal joint probabilities and the real transition probabilities, and finding a contradiction. As a result, it is revealed that these two kinds of probabilities obey different laws respectively.
     贝尔的工作的意义是通过“自旋相关函数”的“隐变量表达式”或其他公式 ,在这种纯属子虚的联合概率与现实的跃迁概率之间建立一种人为的关系 ,并引出一个矛盾 ,从而证明这两种概率各自遵循不同的规律。
短句来源
     Bell’s inequality can be traced back to a classical probabilistic formula that is invalid clearly, while spin correlation formula in quantum mechanics to a formula that has confirmed both by facts and quantum mechanics.
     本文证明:贝尔不等式可以追溯到一个显然不成立的经典概率论的公式,而量子力学的自旋相关公式则可以追溯到一个已经被实验证实的量子力学公式。
短句来源
     The decreased grain size increases the surface spin disordered state and the resistivity which originates from the strengthened scatter of the spin correlation electron at the grain boundary, but reduces the Curie temperature.
     随着晶粒尺寸的减小晶粒表面处的自旋无序增多,使居里温度降低,同时使自旋相关电子在晶界处的散射增强,提高了材料电阻率.
短句来源
     On applying the self spin correlation effect and coulomb theory,this article give a explanation to the prob- lem of the disability of energy band mode.
     采用自旋相关效应和库仑效应的理论,解释了能带模型失效的问题。
短句来源
  自旋关联的
     PHONON VIBRATION AND SPIN CORRELATION OF LaBa_2Cu_(3-x)Co_xO_y
     LaBa_2Cu_(3-x)Co_xO_y体系中声子振动和自旋关联的研究
短句来源
     We study effect of the next-nearest-neighbor coupling on antiferromagnetic order,Neel temperature,and spin correlation in terms of our anisotropic nonlinear spin wave theory.
     在本人已有的工作──各向异性非线性自旋波理论的基础上研究次近邻耦合对序参数、Neel温度和自旋关联的影响。
短句来源
     The effect of the second neighbor hopping t′ on the incommensurate spin correlation in the t-J model in the underdoped regime is studied within the fermion-spin theory.
     在t J模型和fermion spin理论框架下 ,研究了电子次近邻跃迁t′对欠掺杂四方晶格铜氧化物材料的反铁磁非公度自旋关联的影响 .
短句来源
     The effect of double doping on spin correlation of CuO-2 plane was analyzed and the formation of a new spin correlation Fe-O-Fe was suggested. At high doping level, the transport mechanism was discussed in detail.
     本文分析和讨论了双掺杂对自旋关联的影响 ,局域化的Fe3 + 自旋散射和热电势宽峰的关联 ,高掺杂浓度区可能的激化子输运机制以及新的磁关联Fe O Fe的逐渐形成和加强 .
短句来源
     The effect of Zn doping on structure, transport properties and spin correlation is discussed in the text.
     本文讨论了掺杂对结构、输运性质和自旋关联的影响.
短句来源
  “spin correlation”译为未确定词的双语例句
     Binary Galaxy Spin Correlation Arising fromGalaxy Merger
     起因于星系并合的双星系的自旋相关性
短句来源
     Probabilities and Spin Correlation
     概率与贝尔定理
短句来源
     The magnetoelectric coupling effect on the spin correlation for the ferroelectromagnetic system
     磁电耦合对于铁电磁系统的磁性关联的影响
短句来源
     By analysing the asymototic behavior of the longitudinal spin correlation function, we obtain that the two\|particle bound state has similar spin structures as those of the singlet ground state.
     双粒子束缚态和基态的关联函数具有类似的短程关联 ,而单粒子激发态的关联函数具有长程关联 .
短句来源
     Considering the limit of the orbital and spin correlation rule,the correspondence between the specific electronic state of the parent radical and the fragment were presented. The possible dissociation channels of different electron states of CF_2 radical were obtained.
     在轨道和自旋规则限制下,得到了母体自由基特定电子态与解离碎片电子态之间的对应关系,并具体给出了CF2自由基在不同电子态下可能的解离通道.
短句来源
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  spin correlation
It is likely the spin correlation time of the triplet states is longer than the lifetime of the complexes.
      
We show that the spin correlation functions are isotropic, which is a characteristic feature of the singlet states of the system.
      
We calculate the spin correlation function for the nearest neighbors in the zeroth approximation as a function of n.
      
The ground state is always a nondegenerate singlet, and the spin correlation functions decay exponentially with distance.
      
This simplest model, however, fails to reproduce the result in a high-temperature region, suggesting rather strong spin-spin correlation of the system.
      
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In the present paper, the electronic structure of electron donor-acceptor complex C_6H_6·C_2(CN)_4 has been calculated by the EHMO method. The energy of the system, charge distribution and charge-transfer have been given. In the calculation, C_6H_6·C_2(CN)_4 is treated as a supermolecule, and the distance and the angle between C_6H_6 and C_2(CN)_4 planes are varied in a series of ways (Fig. 1). The results (Table 1) show that because the EHMO method does not consider the long-range van der Waals action and the...

In the present paper, the electronic structure of electron donor-acceptor complex C_6H_6·C_2(CN)_4 has been calculated by the EHMO method. The energy of the system, charge distribution and charge-transfer have been given. In the calculation, C_6H_6·C_2(CN)_4 is treated as a supermolecule, and the distance and the angle between C_6H_6 and C_2(CN)_4 planes are varied in a series of ways (Fig. 1). The results (Table 1) show that because the EHMO method does not consider the long-range van der Waals action and the spin correlations between C_6H_6 and C_2(CN)_4, the energy of the system at the complex formation distance of 3.6 A does not present a small potential well, but the system is just at the point between rapid change and slow change of the energy of the system (Fig. 2). From viewpoint of the orientation, the plane of C_6H_6 against the plane of C_2(CN)_4 may have a free rotation, of which the barrier is about 0.01 kcal/mol and is 6-fold rather than 12-fold [Fig. 3, and Eq. (1) and (2)]. The configuration, in which C-C bond of C_2(CN)_4 is perpendicular to a couple of C-C bonds of C_6H_6, has lower energy, the configuration, in which C-C bond of C_2 (CN)_4 is parallel to a couple of C-C bonds of C_6H_6, has higher energy (Fig. 1 and Fig. 3). From the calculated values (Table 2), the charge transfer decreases as the distance between C_6H_6 and C_2(CN)_4 increases, and the varying tendency of the charge transfer with orientation is opposite to that of the energy (Fig. 5), so that the minimum of the energy corresponds to the maximum of the charge transfer (Fig. 3 and Fig. 5). According to this fact, the charge transfer also plays a very important role even in the weak electron donor-acceptor complex C_6H_6·C_2(CN)_4. From the charge distribution [Eq.(3) and (4), and Table 3], in which q° and q are the atomic charges in the isolated C_6H_6, C_2 (CN)_4 and C_6H_6·C_2 (CN)_4 respectively, and △q=q-q° is the differential charge. II in C_6H_6 does not take part in the charge transfer whp.n the electron donor-acceptor complex C_6H_6·C_2(CN)_4 is formed, whioh is the characteristic property of a π-π complex.

本文用EHMO方法对C_6H_6·C_2(CN)_4电子施受复合物的电子结构进行了计算,计算时把C_6H_6·C_2(CN)_4看成一个超级分子.计算结果表明,复合物形成的距离3.6A处于能量变化陡峭和趋于平缓的转折点上。室温下C_6H_6平面相对于C_2(CN)_4平面可以自由旋转,自由旋转势垒~0.01kcal/mol,每旋转360°要克服六重势垒.体系能量低的构型是C_2(CN)_4中C—C键与C_6H_6中某一相对C—C键相互垂直的构型,而不是与C_6H_6中某一相对C—C键相互平行的构型、电荷转移随角度而变化与体系能量随角度而变化的倾向相反,能量的极小值对应于电荷转移的极大值.这说明,在此弱电子施受复合物C_6H_6·C_2(CN)_4中电荷转移仍起着决定性的作用。复合物形成时,C_6H_6上的H来参加电荷转移,表征了π-π复合的特性。

Based on the intraatomic electron correlation and the interatomic electron and spin correlation, the local approach has been used to the Hubbard model. The term〈OOH〉which was neglected in the general calculation is retained in our calculation. Camparing our results with those of the general calculation, we find that when U is large, the effects of the term〈OOH〉in the paramagnetic phase can not be heglected for calculating the correlation energy, the ground state energy, the local moments and the...

Based on the intraatomic electron correlation and the interatomic electron and spin correlation, the local approach has been used to the Hubbard model. The term〈OOH〉which was neglected in the general calculation is retained in our calculation. Camparing our results with those of the general calculation, we find that when U is large, the effects of the term〈OOH〉in the paramagnetic phase can not be heglected for calculating the correlation energy, the ground state energy, the local moments and the antiferromagnetic polarization around the local moments. To estimate more accurately the electron correlation effects, one has to calculate to higher orders and check he convergency of the series.

本文基于同一格点的电子相关和最近邻格点间的电荷相关及自旋相关,把局域方法的级数展开用于Hubbard模型。和通常的二阶计算不同,我们在计算中保留了项。比较这两种不同计算方法所得到的结果,发现在U较大时,项对顺磁相的相关能、基态能量、局域磁矩和由局域磁矩引起的反铁磁极化均有不可忽略的修正。要准确计及电子相关效应,还需通过作更高阶展开,以考察级数的收敛性。

On the basis or the SCCF model, the complete energy matrices of O_h double group for spin quartet states of d~s system have been formulated. The energy levels of d-d transistion of Mn~(2+) in KMgF_3: Mn~(2+) are calculated with these matrices. Calculted resultes are good agree- ment with experment observation. The splitting of energy level between ~4A_(1?) (G) and ~4E_g(G) is orginated from spin-correlation effection; three absorption bands (38715cm~(-1), 40650cm~(-1), 43860cm~(-1)) can be...

On the basis or the SCCF model, the complete energy matrices of O_h double group for spin quartet states of d~s system have been formulated. The energy levels of d-d transistion of Mn~(2+) in KMgF_3: Mn~(2+) are calculated with these matrices. Calculted resultes are good agree- ment with experment observation. The splitting of energy level between ~4A_(1?) (G) and ~4E_g(G) is orginated from spin-correlation effection; three absorption bands (38715cm~(-1), 40650cm~(-1), 43860cm~(-1)) can be assigned in our model; some bands which can't be explained by the SCCF model have been explained with our calculated results.

本文在SCCF模型的基础上,构造了d~5系在O_k对称晶场下四重态的完全能量矩阵。求出了KMgF_3:Mn~(2+)中Mn~(2+)的d-d跃迁(△S=1)能级。理论计算与观测结果的一致性表明:~4A_(1g)(G)和~4E_R(G)态的分裂只能起因于自旋相关效应;38715cm~(-1)、40650cm~(-1)、43860cm~(-1)带有了相应的跃迁指定。解释了SCCF模型未能指定的~4T_(1R)(G)、~4T_(2R)(G)、~4T_(2R)(D)、~4E_R(D)和~4T_(1R)(P)能级的分裂。

 
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