Spin accumulation in coupled quantum dots with ferromagnetic and superconducting electrodes

Hui Pan; Rong Lü

doi:10.1016/j.physb.2008.03.022

Spin accumulation in coupled quantum dots with ferromagnetic and superconducting electrodes

Hui Pan^*
, Rong Lü

^*Corresponding author for this work

School of Physics

Tsinghua University

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

We theoretically investigate the spin accumulation in two parallel coupled quantum dots (QDs) with ferromagnetic and superconducting electrodes. Due to the ferromagnetic lead, the spin accumulation appears on the resonance of Andreev reflection. The spin accumulation in each of the two QDs can be controlled by the gate voltage. The sign of the spin accumulation is also controllable by tuning the bias. Furthermore, tuning the magnetic flux can exchange the amplitude of the spin accumulation in the two QDs. The Aharonov-Bohm oscillation effects also provides a way to control the spin accumulation of each QD.

Original language	English
Pages (from-to)	3125-3129
Number of pages	5
Journal	Physica B: Condensed Matter
Volume	403
Issue number	18
DOIs	https://doi.org/10.1016/j.physb.2008.03.022
State	Published - 1 Sep 2008

Keywords

Andreev reflection
Coupled quantum dots
Ferromagnetic electrodes
Spin accumulation

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10.1016/j.physb.2008.03.022

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title = "Spin accumulation in coupled quantum dots with ferromagnetic and superconducting electrodes",

abstract = "We theoretically investigate the spin accumulation in two parallel coupled quantum dots (QDs) with ferromagnetic and superconducting electrodes. Due to the ferromagnetic lead, the spin accumulation appears on the resonance of Andreev reflection. The spin accumulation in each of the two QDs can be controlled by the gate voltage. The sign of the spin accumulation is also controllable by tuning the bias. Furthermore, tuning the magnetic flux can exchange the amplitude of the spin accumulation in the two QDs. The Aharonov-Bohm oscillation effects also provides a way to control the spin accumulation of each QD.",

keywords = "Andreev reflection, Coupled quantum dots, Ferromagnetic electrodes, Spin accumulation",

author = "Hui Pan and Rong L{\"u}",

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T1 - Spin accumulation in coupled quantum dots with ferromagnetic and superconducting electrodes

AU - Pan, Hui

AU - Lü, Rong

PY - 2008/9/1

Y1 - 2008/9/1

N2 - We theoretically investigate the spin accumulation in two parallel coupled quantum dots (QDs) with ferromagnetic and superconducting electrodes. Due to the ferromagnetic lead, the spin accumulation appears on the resonance of Andreev reflection. The spin accumulation in each of the two QDs can be controlled by the gate voltage. The sign of the spin accumulation is also controllable by tuning the bias. Furthermore, tuning the magnetic flux can exchange the amplitude of the spin accumulation in the two QDs. The Aharonov-Bohm oscillation effects also provides a way to control the spin accumulation of each QD.

AB - We theoretically investigate the spin accumulation in two parallel coupled quantum dots (QDs) with ferromagnetic and superconducting electrodes. Due to the ferromagnetic lead, the spin accumulation appears on the resonance of Andreev reflection. The spin accumulation in each of the two QDs can be controlled by the gate voltage. The sign of the spin accumulation is also controllable by tuning the bias. Furthermore, tuning the magnetic flux can exchange the amplitude of the spin accumulation in the two QDs. The Aharonov-Bohm oscillation effects also provides a way to control the spin accumulation of each QD.

KW - Andreev reflection

KW - Coupled quantum dots

KW - Ferromagnetic electrodes

KW - Spin accumulation

UR - https://www.scopus.com/pages/publications/48749099265

U2 - 10.1016/j.physb.2008.03.022

DO - 10.1016/j.physb.2008.03.022

M3 - 文章

AN - SCOPUS:48749099265

SN - 0921-4526

VL - 403

SP - 3125

EP - 3129

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - 18

ER -

Spin accumulation in coupled quantum dots with ferromagnetic and superconducting electrodes

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