【摘 要】
：
We theoretically study the effects of the antiferromagnetic (AF) spin coupling and the interdot Coulomb repulsion on the Kondo effects in serial double quantum
【机 构】
：
College of Physics and Electronic Engineering, Sichuan Normal University, Chengdu 610086
论文部分内容阅读
We theoretically study the effects of the antiferromagnetic (AF) spin coupling and the interdot Coulomb repulsion on the Kondo effects in serial double quantum dots by means of the slave-boson mean-field approximation.Our results indicate that in the weak coupling regime,the AF spin coupling strengthens the Kondo resonance,while the interdot Coulomb repulsion suppresses them for the equilibrium case.In the non-equilibrium case,the AF spin coupling strengthens the Kondo resonance only when J ＞ 2.5TK0,while the interdot Coulomb repulsion does not suppress Kondo peaks.In the strong coupling regime,the bias voltage has no effects on the Kondo resonance in this system,and the AF spin coupling increases the height of Kondo peaks only when J ＜ 2.5TK0.However,the inter-dot Coulomb repulsion suppresses the spin Kondo effect,which induces the orbit Koudo effect.Moreover,the relevant underlying physics of these problems are discussed.
其他文献
设备选型配置贯穿于项目施工的全过程,在国际公路承包工程中,筑路机械设备选型配置不仅需要从设备本身的技术条件和经济条件等方面综合考虑,更需要在充分考虑所在国(地区)市
对新型变径挤扩灌注桩成型机的挤扩效应进行了弹塑性的非线性有限元分析,结合ANSYS有限元程序,探讨其在建模、加载计算及后处理方面的分析计算方法.得出了桩孔壁土的径向位移
We investigate properties of the low-lying energy states for 76 Ge within the framework of the proton-neutron interacting model IBM2,considering the validity of
“十五”期间,我国推土机行业走过了一条坎坷的发展道路,同样经受着“井喷”和宏观调控的双重刺激,同样经受着同质化和价格战的困扰,同属利润较低的子行业,但是正因为较低的
诚信是企业在经营活动中必须遵守的职业道德.一个企业要得到社会公众的认可就必须打造一个响亮的企业品牌,就必须赋予这个品牌以丰富的道德内涵,这个内涵就是“诚信”.一个企
辣木在昆明市东川区低热河谷试验栽植获得成功后,笔者通过对该种植物的生长状况、结果情况和经济效益等的深入分析,得出辣木在东川区适宜栽培的温度为年均温22℃,最冷月均温1
We report on the measurements of nonlinear current-voltage characteristics of graphene fabricated by chemical vapor deposition.The current-voltage characteristi
介绍了KL-20ES隧道挖装机主要性能特点、技术改造的难点、主要内容和方法,为国产挖装机的开发提供了借鉴.
以SF350水泥滑模摊铺机为例,对摊铺机螺旋分料器在工作中突然停止转动的故障进行了分析,并提出了故障排除的方法。
Taking SF350 cement slipform paver as an example, the
进入新世纪,面对我国加入WTO后市场竞争加剧和市场竞争转向技术竞争的新形势,湖州市中小企业的素质性、结构性矛盾日渐显现。因而,研究如何促进中小企业技术创新发展,提高其