Coulomb blockade related to a localization effect in a single tunnel-junction/carbon-nanotube system

被引：30

作者：

Haruyama, J ^{[1
]}

Takesue, I ^{[1
]}

Hasegawa, T ^{[1
]}

Sato, Y ^{[1
]}

机构：

[1] Aoyama Gkuin Univ, Dept Elect & Elect Engn, Setagaya Ku, Tokyo 1578572, Japan

来源：

PHYSICAL REVIEW B | 2001年 / 63卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.63.073406

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on Coulomb blockade caused by the high impedance external electromagnetic environment (EME) related to a localization effect in a single tunnel-junction/carbon-nanotube system. Observed Coulomb blockade, supported by a linear temperature dependence of zero-bias conductance, mathematically follows phase correlation theory, which explains the roles of EME and implies that tunneling of electrons is suppressed by transferring the energy to its EME with a total impedance Z(t)(omega) higher than quantum resistance. Our high Z(t)(omega), however, is strongly associated with the antilocalization effect without any energy dissipation hut actually contributes to Coulomb blockade, because its phase modulation by magnetic field modulates also Coulomb blockade. Is the energy transfer to such high impedance EME actually indispensable for Coulomb blockade?.

引用

页数：4

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