Momentum-dependent light scattering in a two-dimensional Heisenberg antiferromagnet: Analysis of x-ray scattering data

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Motivated by the achievements of the x-ray scattering technique, we analyzed the profile of the light scattering cross section R (q,ω) at a finite q in a 2D Heisenberg antiferromagnet. Previous Raman scattering studies at q=0 identified the two-magnon peak in B1g scattering geometry. We found that the B1g peak disperses downwards at a finite q, and its cross section increases, reaching its maximum at q= q0 = (0,π) and symmetry related points. In addition, the cross-section in the A1g geometry becomes nonzero at a finite q, and also displays a two-magnon peak which gains strength and disperses to larger frequencies with increasing q, and reaches its highest cross section at q0. We found that the profile of R (q0, ω) is equivalent in A1g and B1g geometries.

Original languageEnglish (US)
Article number024417
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume75
Issue number2
DOIs
StatePublished - Jan 29 2007

Fingerprint

x ray scattering
Light scattering
Momentum
light scattering
Scattering
momentum
X rays
Geometry
cross sections
geometry
profiles
scattering cross sections
Raman scattering
Raman spectra
symmetry
scattering

Cite this

@article{240fbcd53c7b4d74bcb3e6c96a55795b,
title = "Momentum-dependent light scattering in a two-dimensional Heisenberg antiferromagnet: Analysis of x-ray scattering data",
abstract = "Motivated by the achievements of the x-ray scattering technique, we analyzed the profile of the light scattering cross section R (q,ω) at a finite q in a 2D Heisenberg antiferromagnet. Previous Raman scattering studies at q=0 identified the two-magnon peak in B1g scattering geometry. We found that the B1g peak disperses downwards at a finite q, and its cross section increases, reaching its maximum at q= q0 = (0,π) and symmetry related points. In addition, the cross-section in the A1g geometry becomes nonzero at a finite q, and also displays a two-magnon peak which gains strength and disperses to larger frequencies with increasing q, and reaches its highest cross section at q0. We found that the profile of R (q0, ω) is equivalent in A1g and B1g geometries.",
author = "A. Donkov and Chubukov, {Andrey V}",
year = "2007",
month = "1",
day = "29",
doi = "10.1103/PhysRevB.75.024417",
language = "English (US)",
volume = "75",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Physical Society",
number = "2",

}

TY - JOUR

T1 - Momentum-dependent light scattering in a two-dimensional Heisenberg antiferromagnet

T2 - Analysis of x-ray scattering data

AU - Donkov, A.

AU - Chubukov, Andrey V

PY - 2007/1/29

Y1 - 2007/1/29

N2 - Motivated by the achievements of the x-ray scattering technique, we analyzed the profile of the light scattering cross section R (q,ω) at a finite q in a 2D Heisenberg antiferromagnet. Previous Raman scattering studies at q=0 identified the two-magnon peak in B1g scattering geometry. We found that the B1g peak disperses downwards at a finite q, and its cross section increases, reaching its maximum at q= q0 = (0,π) and symmetry related points. In addition, the cross-section in the A1g geometry becomes nonzero at a finite q, and also displays a two-magnon peak which gains strength and disperses to larger frequencies with increasing q, and reaches its highest cross section at q0. We found that the profile of R (q0, ω) is equivalent in A1g and B1g geometries.

AB - Motivated by the achievements of the x-ray scattering technique, we analyzed the profile of the light scattering cross section R (q,ω) at a finite q in a 2D Heisenberg antiferromagnet. Previous Raman scattering studies at q=0 identified the two-magnon peak in B1g scattering geometry. We found that the B1g peak disperses downwards at a finite q, and its cross section increases, reaching its maximum at q= q0 = (0,π) and symmetry related points. In addition, the cross-section in the A1g geometry becomes nonzero at a finite q, and also displays a two-magnon peak which gains strength and disperses to larger frequencies with increasing q, and reaches its highest cross section at q0. We found that the profile of R (q0, ω) is equivalent in A1g and B1g geometries.

UR - http://www.scopus.com/inward/record.url?scp=33846459083&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33846459083&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.75.024417

DO - 10.1103/PhysRevB.75.024417

M3 - Article

AN - SCOPUS:33846459083

VL - 75

JO - Physical Review B

JF - Physical Review B

SN - 2469-9950

IS - 2

M1 - 024417

ER -