Current rectification by Pauli exclusion in a weakly coupled double quantum dot system

被引：700

作者：

Ono, K

Austing, DG

Tokura, Y

Tarucha, S ^{[1
]}

机构：

[1] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

[2] NTT Corp, Nippon Telegraph & Tel Basic Res Labs, Atsugi, Kanagawa 2430198, Japan

[3] Natl Res Council Canada, Inst Microstruct Sci M23A, Ottawa, ON K1A 0R6, Canada

[4] Japan Sci & Technol, Exploratory Res Adv Technol Mesoscop Correlat Pro, Atsugi, Kanagawa 2430198, Japan

来源：

SCIENCE | 2002年 / 297卷 / 5585期

关键词：

D O I：

10.1126/science.1070958

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We observe spin blockade due to Pauli exclusion in the tunneling characteristics of a coupled quantum dot system when two same-spin electrons occupy the lowest energy state in each dot. Spin blockade only occurs in one bias direction when there is asymmetry in the electron population of the two dots, leading to current recti cation. We induce the collapse of the spin blockade by applying a magnetic field to open up a new spin-triplet current-carrying channel.

引用

页码：1313 / 1317

页数：5

共 23 条

[1] Magnetic field induced transitions in the few-electron ground states of artificial molecules [J].