Crossover from Homogeneous to Fractal Excitations in the Near-Percolating Heisenberg Antiferromagnet RbMn0.39Mg0.61F3

Hironobu Ikeda; Shinichi Itoh; Mark A. Adams; Jaime A. Fernandez-Baca

doi:10.1143/JPSJ.67.3376

Crossover from Homogeneous to Fractal Excitations in the Near-Percolating Heisenberg Antiferromagnet RbMn_0.39Mg_0.61F₃

Hironobu Ikeda
, Shinichi Itoh
, Mark A. Adams
, Jaime A. Fernandez-Baca

Triple-Axis

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

Neutron inelastic scattering experiments on the near-percolating Hesisenberg antiferromagnet, RbMn_0.39Mg_0.61F₃, were performed using a high energy-resolution spectrometer (15 μeV). The results reveal a crossover from magnon excitations at small wave-vectors to over-damped fracton excitations at large wave-vectors. This evinces experimentally that the atomic connectivity in an infinite percolating network looks homogeneous at wave-vectors smaller than a crossover wave-vector, as predicted by the theory.

Original language	English
Pages (from-to)	3376-3379
Number of pages	4
Journal	Journal of the Physical Society of Japan
Volume	67
Issue number	10
DOIs	https://doi.org/10.1143/JPSJ.67.3376
State	Published - Oct 1998

Keywords

Fractal
Fracton
Inelastic neutron scattering
Magnetic excitation
Magnon
Percolating magnet

Access to Document

10.1143/JPSJ.67.3376

Cite this

@article{0dedcaa87735465aa3de773d041c2095,

title = "Crossover from Homogeneous to Fractal Excitations in the Near-Percolating Heisenberg Antiferromagnet RbMn0.39Mg0.61F3",

abstract = "Neutron inelastic scattering experiments on the near-percolating Hesisenberg antiferromagnet, RbMn0.39Mg0.61F3, were performed using a high energy-resolution spectrometer (15 μeV). The results reveal a crossover from magnon excitations at small wave-vectors to over-damped fracton excitations at large wave-vectors. This evinces experimentally that the atomic connectivity in an infinite percolating network looks homogeneous at wave-vectors smaller than a crossover wave-vector, as predicted by the theory.",

keywords = "Fractal, Fracton, Inelastic neutron scattering, Magnetic excitation, Magnon, Percolating magnet",

author = "Hironobu Ikeda and Shinichi Itoh and Adams, \{Mark A.\} and Fernandez-Baca, \{Jaime A.\}",

year = "1998",

month = oct,

doi = "10.1143/JPSJ.67.3376",

language = "English",

volume = "67",

pages = "3376--3379",

journal = "Journal of the Physical Society of Japan",

issn = "0031-9015",

publisher = "Physical Society of Japan",

number = "10",

}

TY - JOUR

T1 - Crossover from Homogeneous to Fractal Excitations in the Near-Percolating Heisenberg Antiferromagnet RbMn0.39Mg0.61F3

AU - Ikeda, Hironobu

AU - Itoh, Shinichi

AU - Adams, Mark A.

AU - Fernandez-Baca, Jaime A.

PY - 1998/10

Y1 - 1998/10

N2 - Neutron inelastic scattering experiments on the near-percolating Hesisenberg antiferromagnet, RbMn0.39Mg0.61F3, were performed using a high energy-resolution spectrometer (15 μeV). The results reveal a crossover from magnon excitations at small wave-vectors to over-damped fracton excitations at large wave-vectors. This evinces experimentally that the atomic connectivity in an infinite percolating network looks homogeneous at wave-vectors smaller than a crossover wave-vector, as predicted by the theory.

AB - Neutron inelastic scattering experiments on the near-percolating Hesisenberg antiferromagnet, RbMn0.39Mg0.61F3, were performed using a high energy-resolution spectrometer (15 μeV). The results reveal a crossover from magnon excitations at small wave-vectors to over-damped fracton excitations at large wave-vectors. This evinces experimentally that the atomic connectivity in an infinite percolating network looks homogeneous at wave-vectors smaller than a crossover wave-vector, as predicted by the theory.

KW - Fractal

KW - Fracton

KW - Inelastic neutron scattering

KW - Magnetic excitation

KW - Magnon

KW - Percolating magnet

UR - https://www.scopus.com/pages/publications/0542393908

U2 - 10.1143/JPSJ.67.3376

DO - 10.1143/JPSJ.67.3376

M3 - Article

AN - SCOPUS:0542393908

SN - 0031-9015

VL - 67

SP - 3376

EP - 3379

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

IS - 10

ER -

Crossover from Homogeneous to Fractal Excitations in the Near-Percolating Heisenberg Antiferromagnet RbMn_0.39Mg_0.61F₃

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this