NEUTRON-SCATTERING STUDY ON THE SPIN-PEIERLS TRANSITION IN A QUASI-ONE-DIMENSIONAL MAGNET CUGEO3

被引：327

作者：

NISHI, M ^{[1
]}

FUJITA, O ^{[1
]}

AKIMITSU, J ^{[1
]}

机构：

[1] AOYAMA GAKUIN UNIV,DEPT PHYS,SETAGAYA KU,TOKYO 157,JAPAN

来源：

PHYSICAL REVIEW B | 1994年 / 50卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.50.6508

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We experimentally show that in the inorganic spin-Peierls compound CuGeO3 the inelastic-neutron-scattering intensity with DELTAE = 1 meV at (0,1,0.5) exponentially decreases below T(SP)(=14 K) due to the formation of the spin-Peierls gap. We also found that the magnetic excitation spectrum exhibits a pronounced energy dispersion, the intrachain and interchain exchange parameters J(c) almost-equal-to 10.4 meV, J(b) almost-equal-to 0.1J(c), and J(a) almost-equal-to -0.01J(c), and the gap energy at T = 0 K is 2.1 meV, suggesting that J(b)/J(c) almost-equal-to 0.1 is rather large compared to the organic spin-Peierls system.

引用

页码：6508 / 6510

页数：3

共 21 条

[1] INFLUENCE OF SUPERCONDUCTING ENERGY-GAP ON PHONON LINEWIDTHS IN NB3SN [J].

AXE, JD ;

SHIRANE, G .

PHYSICAL REVIEW LETTERS, 1973, 30 (06) :214-216

[2] OBSERVATION OF A SPIN-PEIERLS TRANSITION IN A HEISENBERG ANTIFERROMAGNETIC LINEAR-CHAIN SYSTEM [J].

BRAY, JW ;

HART, HR ;

INTERRANTE, LV ;

JACOBS, IS ;

KASPER, JS ;

WATKINS, GD ;

WEE, SH ;

BONNER, JC .

PHYSICAL REVIEW LETTERS, 1975, 35 (11) :744-747

[3]

desCloizeaux J., 1962, PHYS REV, V128, P2131, DOI DOI 10.1103/PHYSREV.128.2131

[4]

FUJITA O, UNPUB

[5] MAGNETIC PHASE-DIAGRAM OF THE SPIN-PEIERLS CUPRATE CUGEO3 [J].

HASE, M ;

TERASAKI, I ;

UCHINOKURA, K ;

TOKUNAGA, M ;

MIURA, N ;

OBARA, H .

PHYSICAL REVIEW B, 1993, 48 (13) :9616-9619

[6] OBSERVATION OF THE SPIN-PEIERLS TRANSITION IN LINEAR CU2+ (SPIN-1/2) CHAINS IN AN INORGANIC COMPOUND CUGEO3 [J].

HASE, M ;

TERASAKI, I ;

UCHINOKURA, K .

PHYSICAL REVIEW LETTERS, 1993, 70 (23) :3651-3654

[7]

HIROTA K, UNPUB

[8] SPIN-PEIERLS TRANSITION IN N-METHYL-N-ETHYLMORPHOLINIUM-DITETRACYANOQUINODIMETHANIDE [MEM-(TCNQ)2] [J].

HUIZINGA, S ;

KOMMANDEUR, J ;

SAWATZKY, GA ;

THOLE, BT ;

KOPINGA, K ;

DEJONGE, WJM ;

ROOS, J .

PHYSICAL REVIEW B, 1979, 19 (09) :4723-4732

[9] SPIN-WAVE ENERGY DISPERSION IN KCUF3 - NEARLY ONE-DIMENSIONAL SPIN-1/2 ANTI-FERROMAGNET [J].

HUTCHINGS, MT ;

IKEDA, H ;

MILNE, JM .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1979, 12 (18) :L739-L744

[10] SPIN-PEIERLS TRANSITIONS IN MAGNETIC DONOR-ACCEPTOR COMPOUNDS OF TETRATHIAFULVALENE (TTF) WITH BISDITHIOLENE METAL-COMPLEXES [J].

JACOBS, IS ;

BRAY, JW ;

HART, HR ;

INTERRANTE, LV ;

KASPER, JS ;

WATKINS, GD ;

PROBER, DE ;

BONNER, JC .

PHYSICAL REVIEW B, 1976, 14 (07) :3036-3051

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