Spin dynamics in NaV2O5 -: Inelastic neutron scattering

被引：77

作者：

Yosihama, T

Nishi, M

Nakajima, K

Kakurai, K

Fujii, Y

Isobe, M

Kagami, C

Ueda, Y

机构：

[1] Univ Tokyo, Inst Solid State Phys, Neutron Scattering Lab, Tokai, Ibaraki 3191106, Japan

[2] Univ Tokyo, Inst Solid State Phys, Mat Design & Characterizat Lab, Minato Ku, Tokyo 1068666, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1998年 / 67卷 / 03期

关键词：

spin-Peierls system; spin-gap; neutron scattering; NaV2O5;

D O I：

10.1143/JPSJ.67.744

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Inelastic neutron scattering measurement of NaV2O5 single crystal samples was carried out to measure their magnetic excitations in the spin-Peierls dimerized state, We found a steep dispersion along the b*-axis (chain direction), having a spin-Peierls gap of almost 10 meV at (3, 0.5, 0). Along the a*-axis (interchain direction), two excitation modes with a weak dispersion have been observed. In addition, a novel intensity modulation has been discovered along this direction, which has not been expected from the crystal structure reported so far.

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页码：744 / 747

页数：4

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