Optically probing the fine structure of a single Mn atom in an InAs quantum dot

被引：130

作者：

Kudelski, A. ^{[1
]}

Lemaitre, A. ^{[1
]}

Miard, A. ^{[1
]}

Voisin, P. ^{[1
]}

Graham, T. C. M. ^{[2
]}

Warburton, R. J. ^{[2
]}

Krebs, O. ^{[1
]}

机构：

[1] CNRS, Lab Photon & Nanostruct, F-91460 Marcoussis, France

[2] Heriot Watt Univ, Sch Engn & Phys Sci, Edinburgh EH14 4AS, Midlothian, Scotland

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.99.247209

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on the optical spectroscopy of a single InAs/GaAs quantum dot doped with a single Mn atom in a longitudinal magnetic field of a few Tesla. Our findings show that the Mn impurity is a neutral acceptor state A(0) whose effective spin J=1 is significantly perturbed by the quantum dot potential and its associated strain field. The spin interaction with photocarriers injected in the quantum dot is shown to be ferromagnetic for holes, with an effective coupling constant of a few hundreds of mu eV, but vanishingly small for electrons.

引用

页数：4

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