Spin Dynamics in Two-Dimensional Arrays of Quantum Dots with Local Ordering of Nanoclusters

被引：0

作者：

Zinovieva, A. F. ^{[1
]}

Dvurechenskii, A. V. ^{[1
]}

Stepina, N. P. ^{[1
]}

Nikiforov, A. I. ^{[1
]}

Lyubin, A. S. ^{[1
]}

Sobolev, N. ^{[2
,3
]}

Carmo, M. C. ^{[2
,3
]}

机构：

[1] Inst Semicond Phys, Pr Lavrentieva 13, Novosibirsk 630090, Russia

[2] Univ Aveiro, Dept Fis, Aveiro, Portugal

[3] Univ Aveiro, I3N, Aveiro, Portugal

来源：

PHYSICS OF SEMICONDUCTORS: 30TH INTERNATIONAL CONFERENCE ON THE PHYSICS OF SEMICONDUCTORS | 2011年 / 1399卷

关键词：

spin relaxation; quantum dot; localization degree;

D O I：

10.1063/1.3666547

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Electron paramagnetic resonance (EPR) is used to probe the spin dynamics in two-dimensional (2D) quantum dot (QD) arrays with local ordering of nanoclusters. A careful examination of EPR line shape, width and g-factor values allow us to attribute this signal to the electrons localized in the strain-induced potential wells in Si in the vicinity of the Ge dots. The strong orientation dependence of EPR line width is defined by changing localization degree of electrons at different magnetic field directions. The theoretical approximation of orientation dependence of EPR line width allows estimating the effective radius of electron localization, as similar to 80 nm.

引用

页数：2

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