Transition-metal-molecular sandwich nanowires as magnetic on/off switch

Menghao Wu, Xiao C Zeng

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Using first-principles calculation, we predict that upon electron injection, transition-metal-benzene [Cr(Bz)] and transition-metal-ferrocene [Mn(Cp)] sandwich nanowires (SWNs) can switch from nonmagnetic semiconductor to magnetic half metal. The mechanism underlying this charge-induced transition is clarified through Stoner criterion. A relationship between induced magnetic moment and injected charge density is investigated. We also find that the magnetic coupling within the [Ti(Bz)] SWN can be also tuned though charge injection. Upon either hole or electron injection, the ground state of [Ti(Bz)] SWN can be switched from antiferromagnetic to ferromagnetic.

Original languageEnglish (US)
Article number053121
JournalApplied Physics Letters
Volume99
Issue number5
DOIs
StatePublished - Aug 1 2011

Fingerprint

nanowires
switches
transition metals
injection
electrons
magnetic moments
benzene
rocks
ground state
metals

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Transition-metal-molecular sandwich nanowires as magnetic on/off switch. / Wu, Menghao; Zeng, Xiao C.

In: Applied Physics Letters, Vol. 99, No. 5, 053121, 01.08.2011.

Research output: Contribution to journalArticle

@article{e0f8ac49906949afbe68d9331518a076,
title = "Transition-metal-molecular sandwich nanowires as magnetic on/off switch",
abstract = "Using first-principles calculation, we predict that upon electron injection, transition-metal-benzene [Cr(Bz)] and transition-metal-ferrocene [Mn(Cp)] sandwich nanowires (SWNs) can switch from nonmagnetic semiconductor to magnetic half metal. The mechanism underlying this charge-induced transition is clarified through Stoner criterion. A relationship between induced magnetic moment and injected charge density is investigated. We also find that the magnetic coupling within the [Ti(Bz)] SWN can be also tuned though charge injection. Upon either hole or electron injection, the ground state of [Ti(Bz)] SWN can be switched from antiferromagnetic to ferromagnetic.",
author = "Menghao Wu and Zeng, {Xiao C}",
year = "2011",
month = "8",
day = "1",
doi = "10.1063/1.3624458",
language = "English (US)",
volume = "99",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",
number = "5",

}

TY - JOUR

T1 - Transition-metal-molecular sandwich nanowires as magnetic on/off switch

AU - Wu, Menghao

AU - Zeng, Xiao C

PY - 2011/8/1

Y1 - 2011/8/1

N2 - Using first-principles calculation, we predict that upon electron injection, transition-metal-benzene [Cr(Bz)] and transition-metal-ferrocene [Mn(Cp)] sandwich nanowires (SWNs) can switch from nonmagnetic semiconductor to magnetic half metal. The mechanism underlying this charge-induced transition is clarified through Stoner criterion. A relationship between induced magnetic moment and injected charge density is investigated. We also find that the magnetic coupling within the [Ti(Bz)] SWN can be also tuned though charge injection. Upon either hole or electron injection, the ground state of [Ti(Bz)] SWN can be switched from antiferromagnetic to ferromagnetic.

AB - Using first-principles calculation, we predict that upon electron injection, transition-metal-benzene [Cr(Bz)] and transition-metal-ferrocene [Mn(Cp)] sandwich nanowires (SWNs) can switch from nonmagnetic semiconductor to magnetic half metal. The mechanism underlying this charge-induced transition is clarified through Stoner criterion. A relationship between induced magnetic moment and injected charge density is investigated. We also find that the magnetic coupling within the [Ti(Bz)] SWN can be also tuned though charge injection. Upon either hole or electron injection, the ground state of [Ti(Bz)] SWN can be switched from antiferromagnetic to ferromagnetic.

UR - http://www.scopus.com/inward/record.url?scp=80051585905&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80051585905&partnerID=8YFLogxK

U2 - 10.1063/1.3624458

DO - 10.1063/1.3624458

M3 - Article

VL - 99

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 5

M1 - 053121

ER -