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量子线

量子线的相关文献在1989年到2022年内共计209篇,主要集中在物理学、无线电电子学、电信技术、一般工业技术 等领域,其中期刊论文157篇、会议论文8篇、专利文献370521篇;相关期刊89种,包括微细加工技术、发光学报、物理学报等; 相关会议7种,包括2008年中国国际光电周、全国第十三次光纤通信暨第十四届集成光学学术会议、中国化学第八届量子化学学术会议等;量子线的相关文献由396位作者贡献,包括丁朝华、肖景林、王占国等。

量子线—发文量

期刊论文>

论文:157 占比:0.04%

会议论文>

论文:8 占比:0.00%

专利文献>

论文:370521 占比:99.96%

总计:370686篇

量子线—发文趋势图

量子线

-研究学者

  • 丁朝华
  • 肖景林
  • 王占国
  • 徐波
  • 何锐
  • 刘建军
  • 赵翠兰
  • 郭康贤
  • 吴丽娜
  • 周光辉
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 李雪; 王海龙; 胡敏; 贾召赛; 曹鑫
    • 摘要: 基于有效质量包络函数近似理论,采用变分法计算了InAs/InxAl1-xAs圆形截面量子线中的基态激子结合能和发射能.计算过程主要考虑了量子线半径、材料组分和外加电场的影响.理论研究表明,随着量子线半径的减小,激子结合能先增大到最大值,然后继续减小;Al组分越高,激子的结合能越高;较小强度的外加电场对激子结合能影响不大,而较大强度的外加电场会破坏激子效应.此外,还发现较大的量子线半径对电场更敏感.发射能与量子线半径、电场强度之间呈非线性关系,发射能随半径或电场的增大而减小.
    • 杨海鸥
    • 摘要: 近几年来,学术界针对低维半导体材料的研究逐渐增多,已经成为半导体科学技术领域中研究的热点问题.电子运输性质是低维半导体结构研究中的一个关键问题,是充分发挥出低维半导体材料作用的必要因素.该文将针对超晶格、量子线和量子点3种低维半导体结构的电子运输进行深入分析.
    • 罗敏
    • 摘要: 一项新的研究观察到电子中的量子效应以及它们在挤入一维“量子线”时的相互作用。通过使用用于制造计算机处理器的现有技术的扩展,研究人员能够通过挤压它们来控制电子,当挤压到一定程度时开始显示量子效应,表现出来的性质可能在新量子技术中得到应用。
    • 肖心举; 纪登辉; 王立威; 龙建松
    • 摘要: 量子线中类氢杂质束缚能的计算方法有很多,本文利用分离变数法将类氢杂质的定态薛定谔方程分离成两个分别与角度和距离有关的二阶常微分方程.再利用二阶常微分方程在正则奇点邻域内的级数解原理,解类氢杂质的波函数,从而求出类氢杂质的束缚能.通过对具体材料的数值计算,结果与其他文献的报道基本吻合,说明该级数解法可行.
    • 赵丽丽; 赵翠兰
    • 摘要: 本文通过精确求解一维有限长量子线中电子的能量本征方程,得到其能量本征值和本征波函数,利用基态和与之宇称相同的最低激发态构造了一个量子比特,研究了低能态性质和量子比特的性质.理论推导与数值计算表明:电子能量随量子线长度的增大而减小;量子比特的振荡周期(或频率)随量子线长度的增大而减小(或增大);量子比特内电子的概率密度随时间和空间变化,给定时刻各空间点的概率密度随位置的变化而变化;且各空间点的概率均随时间做周期性振荡.
    • 赵敬龙; 董正超; 仲崇贵; 李诚迪
    • 摘要: 考虑铁基超导中能带间的相互作用和界面对每一个能带的散射作用,利用推广的Blonder-Tinkham-Klapwijk模型,并通过求解Bogoliubov-de Gennes 方程研究了具有不同类型双能隙系统的量子线/铁基超导隧道结中准粒子的输运系数和隧道谱.研究表明:1)在弹道极限时,随着带间相互作用的增大, s±波隧道谱中零偏压附近的平台演变成电导峰;s++波的平台演变成凹陷;p波的零偏压电导峰被压低.2)界面对两个能带的散射作用不为零时,随着带间相互作用的增大, s±波和s++波两能隙处的峰值将降低,而两峰间的凹陷值将变大; p波的零偏压电导峰被压低,非零偏压电导增大.3)界面对每个能带的散射,可使其产生的电导峰变得更加尖锐,但可压低和抹平另一个带产生的电导峰值.这些结果对于澄清铁基超导体的能隙结构和区别不同类型铁基超导体有所帮助.%Taking into account the interface scattering effect on each band (in-band interaction) and the interaction between the bands (inter-band interaction), within an extended Blonder-Tinkham-Klapwijk scattering formalism, we have studied the quasi-particle transport coefficients and the tunneling spectrum for quantum wire/iron-based superconductor junction of different types of two-level system by solving the Bogoliubov-de Gennes equations. It has been shown that: 1) When the junction is in ballistic limit, the platform near zero bias of the s±-wave tunneling spectroscopy will become a conductance peak as the inter-band interaction increases, while a dip occurs in s++-wave tunneling spectroscopy, and the zero-bias conductance peak will be depressed for p-wave. 2) When the interface scattering effect is not zero, the peaks in the two energy gaps of both s±-wave and s++-wave iron-based superconductor will be depressed; as the inter-band interaction increases, the dip between the two peaks will increase, moreover, the value of zero-bias conductance peaks for p-wave will be lowered and the value of nonzero-bias conductance will be increased. 3) As the in-band interaction is increased, the self-conductance peak will become sharper, while the another conductance peak is not only lowered but also smoothed. These results will be helpful for clarifying the structure of the pair-potential in iron-based superconductor and distinguishing their types.
    • 丁朝华; 鲍继平; 孙银凤; 王旭颖
    • 摘要: 采用线性组合算符和幺正变换相结合方法研究了电场和温度对量子线中强耦合束缚极化子性质的影响。计算了在电场和温度影响下抛物量子线中强耦合束缚极化子的基态能量、平均声子数和振动频率。数值计算结果表明:束缚极化子的基态能量随约束强度、库仑束缚势和电场强度的增大而逐渐增大;平均声子数随温度、耦合强度的增大呈现递增关系,随库仑束缚势的加大呈现递减关系;振动频率随耦合强度和温度的增大而增大,随库仑束缚势的减小而增大。%The influences of electric field and temperature on properties of strong-coupling bound polaron in parabolic quantum wires are studied by using of the linear combination operator and the unitary transformation methods. The ground state energy, the mean number of phonon and the vibrational frequency were calculated. The numerical results show that the ground state energy increases with the increasing Coulomb bound potential and electric field. The mean number of phonon is a increasing function of the temperature and the confinement strength, and it is a decreasing function of the Coulomb bound potential. The variation frequency increases with the increasing of electron-phonon coupling strength and temperature. However, it decreases with increasing the Coulomb bound potential.
    • 丁朝华; 赵颖; 吴丽娜
    • 摘要: The influences of Rashba effect on the properties of strong -coupling bound magnetopolaron in quan-tum wire are studied by using the improved linear combination operator and the unitary transformation methods . The effective mass and the vibrational frequency are calculated .Numerical calculations for RbCl crystal are per-formed and the results show that the Rashba effect makes the effective mass of the bound magnetpolaron split into two branchs , whereas the vibration frequency λof polaron will increase with the increases of the confinement strength and the cyclotron frequency .%采用改进的线性组合算符和幺正变换相结合的方法研究了Rashba效应对抛物量子线中强耦合束缚磁极化子性质的影响。计算了抛物量子线中强耦合束缚磁极化子的有效质量和振动频率,对RbCl材料的数值计算结果表明:量子线中强耦合束缚磁极化子的振动频率随受限强度和回旋频率的增加而增大;有效质量与磁极化子的受限强度、回旋频率和电子面密度有关,在Rashba效应影响下有效质量随上述各量的变化曲线都发生了分裂。
    • 王秀清; 肖景林
    • 摘要: 采用线性组合算符和幺正变换法计算了量子线中强耦合极化子的振动频率、基态能量、基态自陷能随温度、电子-声子耦合强度以及受限长度的变化。发现振动频率、基态能量、基态自陷能都是温度及耦合强度的函数,且随着温度的增加而增大;受限长度也随温度及耦合强度的增加而增大,但是当温度增大到一定值时,随着温度的增加耦合强度在减小。
    • 安兴涛; 刁淑萌
    • 摘要: 硅烯是由单层硅原子形成的二维蜂窝状晶格结构,具有石墨烯类似的电学性质,由于硅烯中存在比较强的自旋轨道耦合而备受关注。本文利用非平衡格林函数方法研究了门电压控制的硅烯量子线中电子输运性质和能带结构。研究发现,只有在较强的门电压下,而且硅烯量子线具有较好的锯齿形或扶手椅形边界而不存在额外硅原子时,硅烯量子线中才存在无能隙的自旋极化边缘态。另外,计算结果表明这种门电压控制的硅烯量子线中边缘态在每个能谷处自旋是极化的。这些计算结果将为实验上利用电场制作硅烯纳米结构提供理论支持。%Silicene is a two-dimensional honeycomb lattice formed by a monolayer of silicon atoms, which has similar electrical properties to those of graphene. Silicene attracts much attention due to its relatively large spin-orbit coupling. The transport properties through a silicene quantum wire controlled by a gate are studied by using the non-equilibrium Green function formalism. A pair of gapless and spin-polarized edge states appears only when the gate voltage is strong and the silicene quantum wire has perfect zigzag or armchair boundaries in which additional silicon atoms are absent. Moreover, the edge states controlled by gate are spin valley-polarized, that is, the directions of spins are opposite in different valleys, which is different from that of the edge state at the interface between the silicene and vacuum. These results can be helpful to design and fabricate the practical silicene nanostructure.
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