Monte Carlo study of magnetic order at ferromagnetic and antiferromagnetic surfaces

Implications for spin-polarized photoelectron diffraction

F. Zhang, S. Thevuthasan, R. T. Scalettar, R. R P Singh, C. S. Fadley

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

We have used Monte Carlo simulations on simple-cubic Ising lattices with modified surface interaction parameters to model phenomenologically the temperature dependence of magnetic order near ferromagnetic and antiferromagnetic surfaces. These results are also discussed in connection with previous experiments suggesting surface-specific magnetic transition temperatures for semi-infinite systems, with special emphasis on spin-polarized photoelectron diffraction as a probe of short-range magnetic order. The calculated spin-spin correlation functions show no evidence of a high-temperature transition in short-range magnetic order. However, over a plausible range of choices for the surface interaction parameters, these correlation functions do show distinct surface transitions in long-range magnetic order that can be well above TN,bulk for antiferromagnets (both frustrated and nonfrustrated) and well above TC,bulk for ferromagnets. Thus, prior spin-polarized photoelectron data from antiferromagnetic KMnF3 and MnO may be explainable via such surface magnetic transitions, although further theoretical and experimental work are necessary to make this connection quantitative and definitive.

Original languageEnglish
Pages (from-to)12468-12479
Number of pages12
JournalPhysical Review B
Volume51
Issue number18
DOIs
Publication statusPublished - 1995
Externally publishedYes

Fingerprint

Photoelectrons
photoelectrons
Diffraction
diffraction
surface reactions
Superconducting transition temperature
transition temperature
temperature dependence
probes
simulation
Experiments
Temperature

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Monte Carlo study of magnetic order at ferromagnetic and antiferromagnetic surfaces : Implications for spin-polarized photoelectron diffraction. / Zhang, F.; Thevuthasan, S.; Scalettar, R. T.; Singh, R. R P; Fadley, C. S.

In: Physical Review B, Vol. 51, No. 18, 1995, p. 12468-12479.

Research output: Contribution to journalArticle

Zhang, F. ; Thevuthasan, S. ; Scalettar, R. T. ; Singh, R. R P ; Fadley, C. S. / Monte Carlo study of magnetic order at ferromagnetic and antiferromagnetic surfaces : Implications for spin-polarized photoelectron diffraction. In: Physical Review B. 1995 ; Vol. 51, No. 18. pp. 12468-12479.
@article{b2e3e2e1f3c34a168d9146072a29db97,
title = "Monte Carlo study of magnetic order at ferromagnetic and antiferromagnetic surfaces: Implications for spin-polarized photoelectron diffraction",
abstract = "We have used Monte Carlo simulations on simple-cubic Ising lattices with modified surface interaction parameters to model phenomenologically the temperature dependence of magnetic order near ferromagnetic and antiferromagnetic surfaces. These results are also discussed in connection with previous experiments suggesting surface-specific magnetic transition temperatures for semi-infinite systems, with special emphasis on spin-polarized photoelectron diffraction as a probe of short-range magnetic order. The calculated spin-spin correlation functions show no evidence of a high-temperature transition in short-range magnetic order. However, over a plausible range of choices for the surface interaction parameters, these correlation functions do show distinct surface transitions in long-range magnetic order that can be well above TN,bulk for antiferromagnets (both frustrated and nonfrustrated) and well above TC,bulk for ferromagnets. Thus, prior spin-polarized photoelectron data from antiferromagnetic KMnF3 and MnO may be explainable via such surface magnetic transitions, although further theoretical and experimental work are necessary to make this connection quantitative and definitive.",
author = "F. Zhang and S. Thevuthasan and Scalettar, {R. T.} and Singh, {R. R P} and Fadley, {C. S.}",
year = "1995",
doi = "10.1103/PhysRevB.51.12468",
language = "English",
volume = "51",
pages = "12468--12479",
journal = "Physical Review B-Condensed Matter",
issn = "0163-1829",
publisher = "American Institute of Physics Publising LLC",
number = "18",

}

TY - JOUR

T1 - Monte Carlo study of magnetic order at ferromagnetic and antiferromagnetic surfaces

T2 - Implications for spin-polarized photoelectron diffraction

AU - Zhang, F.

AU - Thevuthasan, S.

AU - Scalettar, R. T.

AU - Singh, R. R P

AU - Fadley, C. S.

PY - 1995

Y1 - 1995

N2 - We have used Monte Carlo simulations on simple-cubic Ising lattices with modified surface interaction parameters to model phenomenologically the temperature dependence of magnetic order near ferromagnetic and antiferromagnetic surfaces. These results are also discussed in connection with previous experiments suggesting surface-specific magnetic transition temperatures for semi-infinite systems, with special emphasis on spin-polarized photoelectron diffraction as a probe of short-range magnetic order. The calculated spin-spin correlation functions show no evidence of a high-temperature transition in short-range magnetic order. However, over a plausible range of choices for the surface interaction parameters, these correlation functions do show distinct surface transitions in long-range magnetic order that can be well above TN,bulk for antiferromagnets (both frustrated and nonfrustrated) and well above TC,bulk for ferromagnets. Thus, prior spin-polarized photoelectron data from antiferromagnetic KMnF3 and MnO may be explainable via such surface magnetic transitions, although further theoretical and experimental work are necessary to make this connection quantitative and definitive.

AB - We have used Monte Carlo simulations on simple-cubic Ising lattices with modified surface interaction parameters to model phenomenologically the temperature dependence of magnetic order near ferromagnetic and antiferromagnetic surfaces. These results are also discussed in connection with previous experiments suggesting surface-specific magnetic transition temperatures for semi-infinite systems, with special emphasis on spin-polarized photoelectron diffraction as a probe of short-range magnetic order. The calculated spin-spin correlation functions show no evidence of a high-temperature transition in short-range magnetic order. However, over a plausible range of choices for the surface interaction parameters, these correlation functions do show distinct surface transitions in long-range magnetic order that can be well above TN,bulk for antiferromagnets (both frustrated and nonfrustrated) and well above TC,bulk for ferromagnets. Thus, prior spin-polarized photoelectron data from antiferromagnetic KMnF3 and MnO may be explainable via such surface magnetic transitions, although further theoretical and experimental work are necessary to make this connection quantitative and definitive.

UR - http://www.scopus.com/inward/record.url?scp=0000621722&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0000621722&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.51.12468

DO - 10.1103/PhysRevB.51.12468

M3 - Article

VL - 51

SP - 12468

EP - 12479

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 0163-1829

IS - 18

ER -