High-energy resolution inelastic neutron scattering experiment on magnetic fracton dispersion in near-percolating three-dimensional Heisenberg antiferromagnet, RbMn0.4Mg0.6F3

被引：3

作者：

Itoh, S ^{[1
]}

Kajimoto, R

Adams, MA

机构：

[1] High Energy Accelerator Res Org, Inst Mat Struct Sci, Neutron Sci Lab, Tsukuba, Ibaraki 3050801, Japan

[2] Japan Atom Energy Res Inst, Neutron Sci Res Ctr, Tokai, Ibaraki 3191195, Japan

[3] Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2005年 / 74卷 / 01期

关键词：

magnetic excitation; percolating magnet; fractal; fracton; inelastic neutron scattering; pulsed neutron;

D O I：

10.1143/JPSJ.74.279

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Magnetic fractons in the near-percolating three-dimensional (3D) Heisenberg antiferromagnet, RbMn0.4Mg0.6F3, were studied using inelastic neutron scattering with a high energy resolution (DeltaE = 17.5 mueV) and at low temperature (T = 1.5 K). It was demonstrated that the fractons follow the dispersion relation of q(z) (q being the wave number). The observed exponent, z = 2.5, was in good agreement with the fractal dimension of the 3D system (D-f = 2.48), as predicted by theory.

引用

页码：279 / 282

页数：4

共 3 条

[1] Fractal structure and critical scattering in the three-dimensional percolating antiferromagnet, RbMn0.31Mg0.69F3
Itoh, S.
Kajimoto, R.
Iwasa, K.
Aso, N.
Bull, M. J.
Adams, M. A.
Takeuchi, T.
Yoshizawa, H.
PHYSICA B-CONDENSED MATTER, 2006, 385 : 441 - 443
[2] Anomalous critical scattering from a three-dimensional percolating antiferromagnet RbMn0.31Mg0.69F3
S. Itoh
K. Iwasa
M.J. Bull
Applied Physics A, 2002, 74 : s789 - s791
[3] Anomalous critical scattering from a three-dimensional percolating antiferromagnet RbMn0.31Mg0.69F3
Itoh, S
Iwasa, K
Bull, MJ
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2002, 74 (Suppl 1): : S789 - S791

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