说明：双击或选中下面任意单词，将显示该词的音标、读音、翻译等；选中中文或多个词，将显示翻译。 您的位置：首页 -> 词典 -> 电声子耦合常数 1)  electron-phonon coupling constant 电声子耦合常数 1. ) Accordirg to the original data of electron-phonon coupling constant λ,Coulomb pseudopotential μ~* and(Debye) temperature,the coefficients c_1,c_2 and c_3 in the formula of strong-coupling supercondultor s critical temperature T_c are calculated. 利用最小二乘法原理推导了超导体的临界温度Tc公式,并根据电声子耦合常数λ、库仑赝势μ*和Debye温度ΘD等原始数据计算了强耦合超导体的临界温度Tc公式中的待定参数c1,c2,c3。 2)  electron-phonon coupling constant 电声耦合常数 1. We also described as critical temperature according to negative power expand in series of the electron-phonon coupling constant ; derived the calculation formula of the effective phonon specturum , electron-phonon coupling constant and Coulomb pseudopotential and introduce the calculating method of the superconducting critica. 用解析的方法求解温度等于临界温度时在Matsubara表象中二阶行列式方程推导出超导临界温度按电声子耦合常数λ=2∫ dω／ω α~2(ω)F(ω)的负幂次展开表达式；得到了强耦合超导理论的有效声子谱α~2(ω)f(ω)，电声耦合常数λ，λ(ω~2)和库仑赝势μ~*的计算公式；研究了金属间化合物MgB_2超导临界温度的计算方法，并对弱耦合BCS理论和强耦合Eliasshberg理论结果作比较。 3)  electron-phonon coupling constants 电声子耦合系数 1. Starting from the experimental lattice parameters,we calculate the electronic structures and the phonon modes with density functional theory,then we evaluate the electron-phonon coupling constants by projecting the first-principles to tight binding model and by finite derivat. 电声子耦合系数是决定有机分子体系电荷传导过程的最重要因素之一,研究电声子耦合对理解有机分子晶体中的本征电荷传输机制有重要的意义。 4)  electron-phonon coupling 电声子耦合 1. Using the full-potential linear-muffin-tin-orbital programs and the linear-response linear-muffin-tin-orbital programs,we calculated the electronic band structure,phonon spectrum and electron-phonon coupling strength in MgB_2 film,and studied the effect of tension of MgB_2 film on its superconductivity. 应用全势线性响应线性糕模轨道方法计算MgB2的电子能带结构、声子谱及电声子耦合常数,并讨论MgB2的超导电性。 2. The electron-phonon coupling intensity are studied by 2LO/LO. 利用二级LO声子的振动强度与一级LO声子的振动强度之比(2LO/LO),研究团簇电声子耦合强弱的结果表明,随着团簇尺寸减小,电声子耦合增强。 3. Analyzing the electronic mass enhancement parameters obtained from the experimental data and the calculated electronic density of states,we deduced the electron-phonon coupling constants λ_ ep =1. 通过分析这三种化合物电子质量提高参数,推算出它们的电声子耦合常数λep分别为1。 5)  electron-phonon coupling 电-声子耦合 1. Using zone-center frozen phonon method, and considering the anharmonicity of phonon frequency , we calculate the phonon frequencies and electron-phonon coupling constant of B1g mode. 第一部分用双层超格子原胞模型计算三元硅化物CaAlSi的电子能带结构,用带心冻结声子法计算了声子频率及电-声子耦合常数,并讨论了它们的超导电性。 6)  Electron-Phonon coupling 电子-声子耦合 1. Using response-linearized linear muffin-tin orbital method we have studied the electronic band structure,phonon spectra,electron-phonon coupling and superconductivity of the new superconductor CaAlSi with AlB_2-type structure. 应用线性响应的线性糕模轨道方法计算AlB2型结构的新超导体CaAlSi的电子能带、声子谱及电子-声子耦合常数,并讨论了它们的超导电性。 补充资料：超精细耦合常数 分子式：CAS号：性质：超精细结构谱线间的间距。在顺磁共振中，超精细耦合常数是电子在该处出现几率的函数。因此，可以利用它了解分子中来成对电子的运动区域的分布，从而了解分子的结构。 说明：补充资料仅用于学习参考，请勿用于其它任何用途。 参考词条 ©2011 dictall.com