Effect of Dot Geometry on Various Kinds of Kondo Behaviors for Parallel Triple Dot System

被引：0

作者：

Xiong, Yong-Chen ^{[1
,2
,3
]}

Zhao, Wen-Lei ^{[3
,4
]}

Zhou, Wang-Huai ^{[1
,2
]}

Zhang, Jun ^{[1
,2
]}

机构：

[1] Hubei Univ Automot Technol, Sch Sci & Adv Funct Mat, Shiyan 442002, Peoples R China

[2] Hubei Univ Automot Technol, Photoelect Technol Res Inst, Shiyan 442002, Peoples R China

[3] Natl Univ Singapore, Dept Phys, Fac Sci, Singapore 117551, Singapore

[4] Jiangxi Univ Sci & Technol, Sch Sci, Ganzhou 341000, Peoples R China

来源：

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | 2017年 / 30卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Parallel triple dot system; Dot geometry; Kondo effect; LDOS; Temperature-dependent magnetic moment; RENORMALIZATION-GROUP APPROACH; DILUTE MAGNETIC-ALLOYS; ANDERSON MODEL; QUANTUM-DOT; STATIC PROPERTIES; TRANSPORT;

D O I：

10.1007/s10948-017-4097-2

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

With the help of the Wilson's numerical renormalization group technique, we study the dynamical and magnetic properties for a parallel triple dot system with five different dot geometries in the strong correlation limit. We reveal that when the dot configuration changes, several kinds of Kondo effect could be found, i.e., the partially screened spin -3/2, the totally screened spin -1, the spin -1/2, and the spin -0 Kondo effects, implying numerically that the manners in which the dots and leads are organized play important roles in the Kondo behaviors. To understand these quantum phenomena, the local density of states, the transmission coefficient, the spin-spin correlation function, and the temperature-dependent magnetic moment for each configuration are shown, and necessary theoretical discussions are given.

引用

页码：2865 / 2870

页数：6

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