Switching off the magnetic exchange coupling by quantum resonances

Ching Hao Chang, Tzay Ming Hong

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We clarify the role of quantum-well states in magnetic trilayer systems of the majority carrier in the ferromagnetic configuration and all carriers in the antiferromagnetic configuration. In addition to numerical and analytic calculations, heuristic pictures are provided to explain the effects of a capping layer and side-layer modulation in recent experiments. This immediately offers individual answers to two unexplained subtle findings in experiments and band-structure calculations. Furthermore, it allows a more flexible tuning of or even a turning off of the interlayer exchange coupling.

Original languageEnglish
Article number214415
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume85
Issue number21
DOIs
Publication statusPublished - 2012 Jun 13

Fingerprint

Exchange coupling
majority carriers
configurations
Band structure
Semiconductor quantum wells
interlayers
Tuning
Experiments
tuning
Modulation
quantum wells
modulation

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

@article{2a90dd581ead42e3bbf21253ba84a934,
title = "Switching off the magnetic exchange coupling by quantum resonances",
abstract = "We clarify the role of quantum-well states in magnetic trilayer systems of the majority carrier in the ferromagnetic configuration and all carriers in the antiferromagnetic configuration. In addition to numerical and analytic calculations, heuristic pictures are provided to explain the effects of a capping layer and side-layer modulation in recent experiments. This immediately offers individual answers to two unexplained subtle findings in experiments and band-structure calculations. Furthermore, it allows a more flexible tuning of or even a turning off of the interlayer exchange coupling.",
author = "Chang, {Ching Hao} and Hong, {Tzay Ming}",
year = "2012",
month = "6",
day = "13",
doi = "10.1103/PhysRevB.85.214415",
language = "English",
volume = "85",
journal = "Physical Review B-Condensed Matter",
issn = "1098-0121",
publisher = "American Physical Society",
number = "21",

}

Switching off the magnetic exchange coupling by quantum resonances. / Chang, Ching Hao; Hong, Tzay Ming.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 85, No. 21, 214415, 13.06.2012.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Switching off the magnetic exchange coupling by quantum resonances

AU - Chang, Ching Hao

AU - Hong, Tzay Ming

PY - 2012/6/13

Y1 - 2012/6/13

N2 - We clarify the role of quantum-well states in magnetic trilayer systems of the majority carrier in the ferromagnetic configuration and all carriers in the antiferromagnetic configuration. In addition to numerical and analytic calculations, heuristic pictures are provided to explain the effects of a capping layer and side-layer modulation in recent experiments. This immediately offers individual answers to two unexplained subtle findings in experiments and band-structure calculations. Furthermore, it allows a more flexible tuning of or even a turning off of the interlayer exchange coupling.

AB - We clarify the role of quantum-well states in magnetic trilayer systems of the majority carrier in the ferromagnetic configuration and all carriers in the antiferromagnetic configuration. In addition to numerical and analytic calculations, heuristic pictures are provided to explain the effects of a capping layer and side-layer modulation in recent experiments. This immediately offers individual answers to two unexplained subtle findings in experiments and band-structure calculations. Furthermore, it allows a more flexible tuning of or even a turning off of the interlayer exchange coupling.

UR - http://www.scopus.com/inward/record.url?scp=84862195164&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84862195164&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.85.214415

DO - 10.1103/PhysRevB.85.214415

M3 - Article

AN - SCOPUS:84862195164

VL - 85

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 21

M1 - 214415

ER -