Magnetic properties of Fe overlayers on W(001) and the effects of oxygen adsorption

Ruqian Wu, Arthur J Freeman

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

The structural and magnetic properties of Fe monolayers and bilayers on the W(001) substrate and the effects of oxygen adsorption were determined using the all-electron total-energy local-density full-potential linearized augmented plane-wave method. The strong ferromagnetism of the free Fe monolayer is completely destroyed by the Fe-W interaction for monolayer Fe/W(001); instead, a c(2×2) antiferromagnetic configuration becomes the ground state. For bilayer Fe/W(001), a tetragonal rather than bcc structure is formed. The ferromagnetism of the previous dead Fe layer is restored by the additional adsorbed Fe layer; the magnetic moment in the interface and surface Fe layers increase to 1.68B and 2.43B, respectively. These ferromagnetic Fe layers induce a sizable magnetic moment (0.22B) in the interfacial W layer. Finally, oxygen adsorption on bilayer Fe/W(001) is found to decrease greatly the magnetism of the interfacial Fe layerto only 0.7Bbut not to affect the top Fe layer.

Original languageEnglish
Pages (from-to)7532-7535
Number of pages4
JournalPhysical Review B
Volume45
Issue number13
DOIs
Publication statusPublished - 1992

Fingerprint

Monolayers
Magnetic properties
Ferromagnetism
Oxygen
magnetic properties
Magnetic moments
Adsorption
adsorption
oxygen
ferromagnetism
Magnetism
Ground state
magnetic moments
Structural properties
Electrons
Substrates
surface layers
plane waves
ground state
configurations

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Magnetic properties of Fe overlayers on W(001) and the effects of oxygen adsorption. / Wu, Ruqian; Freeman, Arthur J.

In: Physical Review B, Vol. 45, No. 13, 1992, p. 7532-7535.

Research output: Contribution to journalArticle

@article{ca517a83f07c40b39e7691e2f1dd0d88,
title = "Magnetic properties of Fe overlayers on W(001) and the effects of oxygen adsorption",
abstract = "The structural and magnetic properties of Fe monolayers and bilayers on the W(001) substrate and the effects of oxygen adsorption were determined using the all-electron total-energy local-density full-potential linearized augmented plane-wave method. The strong ferromagnetism of the free Fe monolayer is completely destroyed by the Fe-W interaction for monolayer Fe/W(001); instead, a c(2×2) antiferromagnetic configuration becomes the ground state. For bilayer Fe/W(001), a tetragonal rather than bcc structure is formed. The ferromagnetism of the previous dead Fe layer is restored by the additional adsorbed Fe layer; the magnetic moment in the interface and surface Fe layers increase to 1.68B and 2.43B, respectively. These ferromagnetic Fe layers induce a sizable magnetic moment (0.22B) in the interfacial W layer. Finally, oxygen adsorption on bilayer Fe/W(001) is found to decrease greatly the magnetism of the interfacial Fe layerto only 0.7Bbut not to affect the top Fe layer.",
author = "Ruqian Wu and Freeman, {Arthur J}",
year = "1992",
doi = "10.1103/PhysRevB.45.7532",
language = "English",
volume = "45",
pages = "7532--7535",
journal = "Physical Review B-Condensed Matter",
issn = "1098-0121",
publisher = "American Physical Society",
number = "13",

}

TY - JOUR

T1 - Magnetic properties of Fe overlayers on W(001) and the effects of oxygen adsorption

AU - Wu, Ruqian

AU - Freeman, Arthur J

PY - 1992

Y1 - 1992

N2 - The structural and magnetic properties of Fe monolayers and bilayers on the W(001) substrate and the effects of oxygen adsorption were determined using the all-electron total-energy local-density full-potential linearized augmented plane-wave method. The strong ferromagnetism of the free Fe monolayer is completely destroyed by the Fe-W interaction for monolayer Fe/W(001); instead, a c(2×2) antiferromagnetic configuration becomes the ground state. For bilayer Fe/W(001), a tetragonal rather than bcc structure is formed. The ferromagnetism of the previous dead Fe layer is restored by the additional adsorbed Fe layer; the magnetic moment in the interface and surface Fe layers increase to 1.68B and 2.43B, respectively. These ferromagnetic Fe layers induce a sizable magnetic moment (0.22B) in the interfacial W layer. Finally, oxygen adsorption on bilayer Fe/W(001) is found to decrease greatly the magnetism of the interfacial Fe layerto only 0.7Bbut not to affect the top Fe layer.

AB - The structural and magnetic properties of Fe monolayers and bilayers on the W(001) substrate and the effects of oxygen adsorption were determined using the all-electron total-energy local-density full-potential linearized augmented plane-wave method. The strong ferromagnetism of the free Fe monolayer is completely destroyed by the Fe-W interaction for monolayer Fe/W(001); instead, a c(2×2) antiferromagnetic configuration becomes the ground state. For bilayer Fe/W(001), a tetragonal rather than bcc structure is formed. The ferromagnetism of the previous dead Fe layer is restored by the additional adsorbed Fe layer; the magnetic moment in the interface and surface Fe layers increase to 1.68B and 2.43B, respectively. These ferromagnetic Fe layers induce a sizable magnetic moment (0.22B) in the interfacial W layer. Finally, oxygen adsorption on bilayer Fe/W(001) is found to decrease greatly the magnetism of the interfacial Fe layerto only 0.7Bbut not to affect the top Fe layer.

UR - http://www.scopus.com/inward/record.url?scp=0001375828&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0001375828&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.45.7532

DO - 10.1103/PhysRevB.45.7532

M3 - Article

VL - 45

SP - 7532

EP - 7535

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 13

ER -