Spin-blockade spectroscopy of a two-level artificial molecule -: art. no. 026803

被引：62
作者：
Pioro-Ladrière, M
Ciorga, M
Lapointe, J
Zawadzki, P
Korkusinski, M
Hawrylak, P
Sachrajda, AS
机构：
[1] Natl Res Council Canada, Inst Microstruct Sci, Ottawa, ON K1A 0R6, Canada
[2] Univ Sherbrooke, Ctr Rech Proprietes Elect Mat Avances, Sherbrooke, PQ J1K 2R1, Canada
来源：
PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 02期
基金：
加拿大自然科学与工程研究理事会;
关键词：
D O I：
10.1103/PhysRevLett.91.026803
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Coulomb- and spin-blockade spectroscopy investigations have been performed on an electrostatically defined "artificial molecule" connected to spin polarized leads. The molecule is first effectively reduced to a two-level system by placing both constituent atoms at a specific location of the level spectrum. The spin sensitivity of the conductance enables us to identify the electronic spin states of the two-level molecule. We find in addition that the magnetic field induces variations in the tunnel coupling between the two atoms. The lateral nature of the device is evoked to explain this behavior.
引用
收藏
页码：1 / 026803
页数：4
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