Pairing of spin excitations in lateral quantum dots -: art. no. 206806

被引：19

作者：

Korkusinski, M ^{[1
]}

Hawrylak, P

Ciorga, M

Pioro-Ladrière, M

Sachrajda, AS

机构：

[1] Natl Res Council Canada, Inst Microstruct Sci, Ottawa, ON K1A 0R6, Canada

[2] Univ Sherbrooke, Dept Phys, Sherbrooke, PQ J1K 2R1, Canada

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.93.206806

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate the existence of correlated electronic states as paired spin excitations of lateral quantum dots in the integer quantum Hall regime. Starting from the spin-singlet filling-factor nu=2 droplet, by increasing the magnetic field we force the electrons to flip spins and increase the spin polarization. We identify the second spin-flip process as one accompanied by correlated, spin depolarized phases, interpreted as pairs of spin excitons. The correlated states are identified experimentally in few-electron lateral quantum dots using high source-drain voltage spectroscopy.

引用

页码：206806 / 1

页数：4

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