h/e magnetic flux modulation of the energy gap in nanotube quantum dots

被引：124

作者：

Coskun, UC ^{[1
]}

Wei, TC ^{[1
]}

Vishveshwara, S ^{[1
]}

Goldbart, PM ^{[1
]}

Bezryadin, A ^{[1
]}

机构：

[1] Univ Illinois, Dept Phys, Urbana, IL 61801 USA

来源：

SCIENCE | 2004年 / 304卷 / 5674期

关键词：

D O I：

10.1126/science.1096647

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 report experiments on quantum dot single-electron-tunneling ( SET) transistors made from short multiwall nanotubes and threaded by magnetic flux. Such systems allow us to probe the electronic energy spectrum of the nanotube and its dependence on the magnetic field. Evidence is provided for the interconversion between gapped (semiconducting) and ungapped ( metallic) states. Our tubes exhibit h/e-period magnetic flux dependence, in agreement with simple tight-binding calculations.

引用

页码：1132 / 1134

页数：3

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