Inelastic neutron scattering study of LiV2O5

被引：8

作者：

Takeo, Y ^{[1
]}

Yosihama, T

Nishi, M

Nakajima, K

Kakurai, K

Isobe, M

Ueda, Y

机构：

[1] Univ Tokyo, ISSP, Neutron Scattering Lab, Tokai, Ibaraki 3191106, Japan

[2] JST, CREST, Tsukuba, Ibaraki, Japan

[3] Univ Tokyo, ISSP, Mat Design & Characterizat Lab, Tokyo 1060032, Japan

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1999年 / 60卷 / 8-9期

关键词：

oxides; neutron scattering; magnetic properties;

D O I：

10.1016/S0022-3697(99)00064-5

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Neutron inelastic scattering experiments were carried out on a mixed valent (V4+/V5+) vanadate LiV2O5 Observed spin wave excitations suggest that the antiferromagnetic (AF) periodicity along the b-axis (chain) direction is characterized by the doubling of the chemical unit cell. A strong dispersion along the b*-axis, an almost I(stacking)-independent excitations and the low energy excitations down to about 1 meV at the AF zone center were also clearly observed. These results suggest that LiV2O5 can be regarded as independent S = 1/2 AF linear chains with a zone boundary energy of 42 +/- 3 meV estimated from the quantum renormalized spin wave dispersion relation. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：1145 / 1147

页数：3

共 7 条

[1] REFINEMENT OF STRUCTURE OF LIV2O5 [J].

ANDERSON, DN ;

WILLETT, RD .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL CRYSTALLOGRAPHY AND CRYSTAL CHEMISTRY, 1971, B 27 (JUL15) :1476-&

[2] Numerical evidence for multiplicative logarithmic corrections from marginal operators [J].

Eggert, S .

PHYSICAL REVIEW B, 1996, 54 (14) :R9612-R9615

[3] Spin fluctuations in S=1/2 double-linear-chain gamma-LiV2O5 studied by Li-7 NMR [J].

Fujiwara, N ;

Yasuoka, H ;

Isobe, M ;

Ueda, Y ;

Maegawa, S .

PHYSICAL REVIEW B, 1997, 55 (18) :11945-11948

[4] Magnetic susceptibilities of AV(2)O(5) (A=Li and Cs) with square pyramidal V(IV)O-5 [J].

Isobe, M ;

Ueda, Y .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1996, 65 (10) :3142-3145

[5] The d orbital character in the spin-Peierls system NaV2O5 [J].

Ohama, T ;

Yasuoka, H ;

Isobe, M ;

Ueda, Y .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1997, 66 (10) :3008-3011

[6] FLUID DIMER CRITICAL-POINT IN S=1/2 ANTIFERROMAGNETIC HEISENBERG CHAIN WITH NEXT NEAREST NEIGHBOR INTERACTIONS [J].

OKAMOTO, K ;

NOMURA, K .

PHYSICS LETTERS A, 1992, 169 (06) :433-437

[7] Dimerization and incommensurate spiral spin correlations in the zigzag spin chain: Analogies to the Kondo lattice [J].

White, SR ;

Affleck, I .

PHYSICAL REVIEW B, 1996, 54 (14) :9862-9869

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