ENERGY GAPS IN THE SPIN-WAVE DISPERSION OF THE LINEAR ANTI-FERROMAGNET TMMC

被引：26

作者：

HEILMANN, IU

BIRGENEAU, RJ

ENDOH, Y

REITER, G

SHIRANE, G

HOLT, SL

机构：

[1] MIT,DEPT PHYS,CAMBRIDGE,MA 02139

[2] UNIV WYOMING,DEPT CHEM,LARAMIE,WY 82070

来源：

SOLID STATE COMMUNICATIONS | 1979年 / 31卷 / 09期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0038-1098(79)90307-7

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

By means of neutron scattering, we have measured magnetic excitations in the linear-chain antiferromagnet TMMC at T =1.8 K. An energy gap is observed at q=0 associated with zz-spin correlations, thus giving direct evidence for the importance of the dipolar xy anisotropy for the spin dynamics at low temperatures. A finite magnetic field applied perpendicular to the chains creates a second q=0 gap. There are substantial discrepancies between field dependence of the spin-wave dispersion and the predictions of linear spin-wave theory. © 1979.

引用

收藏

页码：607 / 610

页数：4

相关论文

共 17 条

[1] MAGNETISM IN ONE DIMENSION [J].

BIRGENEAU, RJ ;

SHIRANE, G .

PHYSICS TODAY, 1978, 31 (12) :32-+

[2] SPIN CORRELATION IN A ONE-DIMENSIONAL HEISENBERG ANTIFERROMAGNET [J].

BIRGENEAU, RJ ;

DINGLE, R ;

HUTCHINGS, MT ;

SHIRANE, G ;

HOLT, SL .

PHYSICAL REVIEW LETTERS, 1971, 26 (12) :718-+

[3]

BONNER JC, COMMUNICATION

[4] EFFECT OF MAGNETIC-FIELD ON 3D ORDERING AND SPIN CORRELATIONS OF LINEAR ANTI-FERROMAGNET TMMC [J].

BORSA, F ;

BOUCHER, JP ;

VILLAIN, J .

JOURNAL OF APPLIED PHYSICS, 1978, 49 (03) :1326-1328

[5] SPECIFIC-HEAT OF ONE-DIMENSIONAL ANTIFERROMAGNET TMMC ABOVE 1K [J].

DIETZ, RE ;

WALKER, LR ;

HSU, FSL ;

HAEMMERLE, WH ;

VIS, B ;

CHAU, CK ;

WEINSTOCK, H .

SOLID STATE COMMUNICATIONS, 1974, 15 (07) :1185-1188

[6] LINEAR-CHAIN ANTIFERROMAGNETISM IN [(CH3)4N][MNCL3] [J].

DINGLE, R ;

LINES, ME ;

HOLT, SL .

PHYSICAL REVIEW, 1969, 187 (02) :643-+

[7] EFFECT OF A MAGNETIC-FIELD ON 3D ORDERING OF LINEAR ANTIFERROMAGNET TMMC [J].

DUPAS, C ;

RENARD, JP .

SOLID STATE COMMUNICATIONS, 1976, 20 (06) :581-584

[8] NEUTRON STUDY OF THE LINE-SHAPE AND FIELD-DEPENDENCE OF MAGNETIC EXCITATIONS IN CUCL2.2N(C5D5) [J].

HEILMANN, IU ;

SHIRANE, G ;

ENDOH, Y ;

BIRGENEAU, RJ ;

HOLT, SL .

PHYSICAL REVIEW B, 1978, 18 (07) :3530-3536

[9] PROTON SPIN-LATTICE RELAXATION IN TMMC [(CH3)4NMNCL3] [J].

HONE, D ;

SCHERER, C ;

BORSA, F .

PHYSICAL REVIEW B, 1974, 9 (03) :965-974

[10] SYMMETRY CROSSOVER IN SPIN DYNAMICS OF (CH3)4NMNCL3 (TMMC) [J].

HONE, D ;

PIRES, A .

PHYSICAL REVIEW B, 1977, 15 (01) :323-332