Electronic structure of nuclear-spin-polarization-induced quantum dots

被引：9

作者：

Pershin, YV ^{[1
]}

机构：

[1] Clarkson Univ, Dept Phys, Ctr Quantum Device Technol, Potsdam, NY 13699 USA

[2] CNRS, F-38042 Grenoble 9, France

[3] Max Planck Inst Festkorperforsch, Grenoble High Magnet Fields Lab, F-38042 Grenoble 9, France

来源：

PHYSICAL REVIEW B | 2004年 / 69卷 / 08期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevB.69.085314

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study a system in which electrons in a two-dimensional electron gas are confined by a nonhomogeneous nuclear-spin polarization. The system consists of a heterostructure that has nonzero nuclei spins. We show that in this system electrons can be confined into a dot region through a local nuclear-spin polarization. The nuclear-spin-polarization-induced quantum dot has interesting properties indicating that electron energy levels are time dependent because of the nuclear-spin relaxation and diffusion processes. Electron confining potential is a solution of diffusion equation with relaxation. Experimental investigations of the time dependence of electron energy levels will result in more information about nuclear-spin interactions in solids.

引用

页数：5

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