Carrier-induced spin splitting of an individual magnetic atom embedded in a quantum dot

被引：78

作者：

Besombes, L

Leger, Y

Maingault, L

Ferrand, D

Mariette, H

Cibert, J

机构：

[1] CNRS, Spectrometrie Phys Lab, Grp Nanophys & Semicond, CEA, F-38402 St Martin Dheres, France

[2] Univ Grenoble 1, F-38402 St Martin Dheres, France

[3] CNRS, Lab Louis Neel, F-38042 Grenoble, France

来源：

PHYSICAL REVIEW B | 2005年 / 71卷 / 16期

关键词：

D O I：

10.1103/PhysRevB.71.161307

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The influence of the number of confined carriers on the spin splitting of a single magnetic ion (Mn2+) embedded in a semiconductor quantum dot is evidenced. Investigating both the biexciton and the exciton transitions in the same Mn-doped quantum dot, we analyze the impact of the Mn-exciton exchange interaction on the fine structure of the quantum dot emission. A single electron-hole pair is enough to induce a spontaneous splitting of the exciton-Mn system. The injection of a second electron-hole pair cancels the exchange interaction with the Mn ion and the Mn spin splitting is significantly reduced. A detailed analysis of the biexciton-Mn transitions reveals that the carriers' orbital wave functions are perturbed by the interaction with the magnetic ion.

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页数：4

相关论文

共 18 条

[1] Monitoring statistical magnetic fluctuations on the nanometer scale -: art. no. 127201 [J].

Bacher, G ;

Maksimov, AA ;

Schömig, H ;

Kulakovskii, VD ;

Welsch, MK ;

Forchel, A ;

Dorozhkin, PS ;

Chernenko, A ;

Lee, S ;

Dobrowolska, M ;

Furdyna, JK .

PHYSICAL REVIEW LETTERS, 2002, 89 (12) :1272011-1272014

[2] Exciton and biexciton fine structure in single elongated islands grown on a vicinal surface [J].

Besombes, L ;

Kheng, K ;

Martrou, D .

PHYSICAL REVIEW LETTERS, 2000, 85 (02) :425-428

[3] Probing the spin state of a single magnetic ion in an individual quantum dot -: art. no. 207403 [J].

Besombes, L ;

Léger, Y ;

Maingault, L ;

Ferrand, D ;

Mariette, H ;

Cibert, J .

PHYSICAL REVIEW LETTERS, 2004, 93 (20) :207403-1

[4] Few-particle effects in single CdTe quantum dots [J].

Besombes, L ;

Kheng, K ;

Marsal, L ;

Mariette, H .

PHYSICAL REVIEW B, 2002, 65 (12) :1-4

[5]

Besombes L, 2001, SPRINGER PROC PHYS, V87, P1151

[6] Optical properties of paramagnetic ion-doped semiconductor nanocrystals -: art. no. 045303 [J].

Bhattacharjee, AK ;

Pérez-Conde, J .

PHYSICAL REVIEW B, 2003, 68 (04)

[7] Exciton magnetic polaron in semimagnetic semiconductor nanocrystals [J].

Bhattacharjee, AK ;

laGuillaume, CBA .

PHYSICAL REVIEW B, 1997, 55 (16) :10613-10620

[8] SHARP-LINE PHOTOLUMINESCENCE AND 2-PHOTON ABSORPTION OF ZERO-DIMENSIONAL BIEXCITONS IN A GAAS/ALGAAS STRUCTURE [J].

BRUNNER, K ;

ABSTREITER, G ;

BOHM, G ;

TRANKLE, G ;

WEIMANN, G .

PHYSICAL REVIEW LETTERS, 1994, 73 (08) :1138-1141

[9] Paramagnetic ion-doped nanocrystal as a voltage-controlled spin filter [J].

Efros, AL ;

Rashba, EI ;

Rosen, M .

PHYSICAL REVIEW LETTERS, 2001, 87 (20) :206601-1

[10] Fine structure of biexciton emission in symmetric and asymmetric CdSe/ZnSe single quantum dots [J].

Kulakovskii, VD ;

Bacher, G ;

Weigand, R ;

Kümmell, T ;

Forchel, A ;

Borovitskaya, E ;

Leonardi, K ;

Hommel, D .

PHYSICAL REVIEW LETTERS, 1999, 82 (08) :1780-1783