Spin dependent transport through a carbon nanotube quantum dot in magnetic field

被引：1

作者：

Krychowski, D. ^{[1
]}

Lipinski, S. ^{[1
]}

Krompiewski, S. ^{[1
]}

机构：

[1] Polish Acad Sci, Inst Mol Phys, PL-60179 Poznan, Poland

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2007年 / 442卷 / 1-2期

关键词：

spin-polarized transport; quantum dots; kondo effect; carbon nanotubes;

D O I：

10.1016/j.jallcom.2006.07.150

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：

Spin-polarized transport through a carbon nanotube quantum dot in the Kondo regime is studied by the equation of motion method. Magnetic field perpendicular to the tube axis breaks the spin degeneracy, whereas axial field breaks both the orbital and spin degeneracies. A strong magnetic field anisotropy of conductance and anisotropy of its spin polarization is observed. We propose a new spin filtering mechanism for the nanotubes with the orbitally nondegenerate levels based on the field induced tuning of spin-polarized states from the same shell into orbital degeneracy. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：379 / 381

页数：3

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