Mesoscopic phenomena in nano-porous alumina films: single nano-tunnel junctions connected to Ni-nanowires and carbon nanotubes

被引：6

作者：

Haruyama, J ^{[1
]}

Takesue, I ^{[1
]}

Kato, S ^{[1
]}

Takazawa, K ^{[1
]}

Sato, Y ^{[1
]}

机构：

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

来源：

APPLIED SURFACE SCIENCE | 2001年 / 175卷

关键词：

porous alumina membrane; Coulomb blockade; single tunnel junction; carbon nanotube; magnetoresistance jump; macroscopic quantum tunneling;

D O I：

10.1016/S0169-4332(01)00138-6

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report on two mesoscopic phenomena observable in nano-porous alumina films. One is Coulomb blockade associated with weak localization in an array of single nano-tunnel junctions/multi-walled carbon nanotubes (MWNTs), and the other is an abrupt magnetoresistance (MR) jump in Ni-nanowire system. Weak localization yields CB in single tunnel junction system by acting as high impedance external electromagnetic environment, following phase correlation theory. The CB is very sensitive to phase modulation in the MWNTs. An abrupt MR jump is associated with magnetic domain walls. Its correlation with macroscopic quantum tunneling and weak localization is discussed. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：597 / 605

页数：9

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