HIGH-RESOLUTION INELASTIC NEUTRON-SCATTERING FROM RBMNCMG1-CF3 (C=0.10 AND 0.15) UNDER MAGNETIC-FIELDS

被引：5

作者：

IWASA, K ^{[1
]}

ANDERSEN, KH ^{[1
]}

TAKAHASHI, M ^{[1
]}

IKEDA, H ^{[1
]}

机构：

[1] NATL LAB HIGH ENERGY PHYS, BOOSTER SYNCHROTRON UTILIZAT FACIL, OHO, IBARAKI 305, JAPAN

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1994年 / 63卷 / 08期

关键词：

HIGH-RESOLUTION INELASTIC NEUTRON SCATTERING; EXTERNAL MAGNETIC FIELD; EXCITATIONS IN SPIN CLUSTERS; ZEEMAN SPLITTING;

D O I：

10.1143/JPSJ.63.2862

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Recently, a high-resolution inelastic neutron spectrometer equipped with a superconducting magnet has been installed at the pulsed spallation neutron source (KENS) at the National Laboratory for High Energy Physics (KEK). For the first experiment using this spectrometer system, we investigated inelastic neutron scattering from diluted Heisenberg magnetic systems, RbMncMg1-cF3 (c=0.10 and 0.15) at 1.5 K with applied magnetic fields. Magnetic excitations in finite-size clusters were observed due to the low concentration of spins localized at the manganese ions. The observed spectra were compared with calculations which were performed by diagonalizing the Hamiltonian. Extending the number of spins in a cluster up to five, good agreement with calculations was obtained for both excitation energies and scattering intensities.

引用

页码：2862 / 2865

页数：4

共 4 条

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