Magneto-Coulomb Effect in Carbon Nanotube Quantum Dots Filled with Magnetic Nanoparticles

被引：21

作者：

Datta, S. ^{[1
,2
]}

Marty, L. ^{[1
,2
]}

Cleuziou, J. P. ^{[1
,2
]}

Tilmaciu, C. ^{[3
]}

Soula, B. ^{[3
]}

Flahaut, E. ^{[3
]}

Wernsdorfer, W. ^{[1
,2
]}

机构：

[1] CNRS, Inst Neel, F-38042 Grenoble 9, France

[2] Univ Grenoble 1, F-38042 Grenoble 9, France

[3] Univ Toulouse, UPS, INP, Inst Carnot Cirimat, F-31062 Toulouse 9, France

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 107卷 / 18期

关键词：

ELECTRIC-FIELD CONTROL; SPIN; MAGNETORESISTANCE;

D O I：

10.1103/PhysRevLett.107.186804

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Electrical transport measurements of carbon nanotubes filled with magnetic iron nanoparticles are reported. Low-temperature (40 mK) magnetoresistance measurements showed conductance hysteresis with sharp jumps at the switching fields of the nanoparticles. Depending on the gate voltage, positive or negative hysteresis was observed. The results are explained in terms of a magneto-Coulomb effect: The spin flip of the iron island at a nonzero magnetic field causes a shift of the chemical potential induced by the change of Zeeman energy; i.e., an effective charge variation is detected by the nanotube quantum dot.

引用

页数：4

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