Kondo effect in quantum dots and molecular devices

来源 :Chinese Science Bulletin | 被引量 : 0次 | 上传用户:CDCBB
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Kondo effect is a very important many-body phenomenon in condensed matter physics,which explains why the resistance increases as the temperature is lowered (usually <10 K) in dilute magnetic alloy, and why the con-ductance increases as temperature is decreased in quantum dots. This paper simply introduces equilibrium and non- equilibrium Kondo effects in quantum dots together with the Kondo effect in quantum dots with even number of electrons (when the singlet and triplet states are degenerate). Fur-thermore, Kondo effect in single atom/molecular transistors is introduced, which indicates a new way to study Kondo effect. Kondo effect is a very important many-body phenomenon in condensed matter physics, which explains why the resistance increases as the temperature is lowered (usually <10 K) in dilute magnetic alloys, and why the con-ductance increases as temperature is decreased in quantum dots. This paper simply introduces equilibrium and non-equilibrium Kondo effects in quantum dots together with the Kondo effect in quantum dots with even number of electrons (when the singlet and triplet states are degenerate). Fur-thermore, Kondo effect in single atom / molecular transistors is introduced, which indicates a new way to study Kondo effect.
其他文献
The convenient preparation of organometallic precursor fac-[99mTc(CO)3 (H2O)3]+ opens a new route to design new radiopharmaceuticals. Based on this precursor, a
The effects of monovalent (Na+, K+) and divalent (Mg2+, Ca2+, Mn2+) ions on the interaction between DNA and histone are studied using the molecular combing tech
Photochemical reactions of poly(3-butoxythiophene-2,5-diyl) with chloroform under irradiation with light were studied. The reactions were separately carried out
利用强子-强子碰撞的模型PYTHIA以及核-核碰撞的模型RQMD比较了各种电荷起伏测量量的快度依赖性,结果发现,这些测量量对快度的依赖性依赖于模型. 但是,电荷关联能很好地测量
用QCD求和规则计算了π介子和K介子的两个twist-3分布振幅的归一化常数mp0π和mp0K. 与运动方程的要求不同, 计算结果表明(把求和规则微扰部分的αs修正考虑之后),mp0π=1.00
为了研制一个强中子发生器,北京大学重离子物理研究所设计了一台高负载因子、高流强的RFQ加速器.本文讨论了RFQ加速腔水冷系统的设计,使用有限元软件ANSYS对水冷系统进行了分
尝试用Woods-Saxon形式的光学势来分析K原子,通过拟合一系列K原子数据,得到了一套最佳光学势参数.把得到的这套光学势和前人的其他几种光学势在接近核表面处作了比较,发现它
By combining vertical deposition with micromolding in capillaries method, we have demonstrated the two-substrate vertical deposition, an alternative and versati
In this paper we give a proof of the Lefschetz fixed point formula of Freed for an orientation-reversing involution on an odd dimensional spin manifold by using
论述了RFQ冷却聚束器的两种离子引出系统——静电引出和小型RFQ方法的模拟结果,并通过流体力学方法计算了设计中的静电引出系统的氦气流量和系统可能获得的真空度.研究结果表