THE LATTICE EVOLUTION OF THE SPIN-PEIERLS MATERIAL CUGEO3 STUDIED BY NEUTRON-SCATTERING

被引：12

作者：

FUJITA, M

ARAI, M

UBUKATA, K

OHTA, H

MINO, M

MOTOKAWA, M

KNIGHT, K

IBBERSON, R

FORSYTH, JB

BENNINGTON, SM

AKIMITSU, O

FUJITA, J

机构：

[1] RES DEV CORP,KAWAGUCHI 332,JAPAN

[2] OKAYAMA UNIV,DEPT PHYS,OKAYAMA 700,JAPAN

[3] TOHOKU UNIV,INST MAT RES,SENDAI,MIYAGI 980,JAPAN

[4] RUTHERFORD APPLETON LAB,ISIS FACIL,DIDCOT OX11 0QX,OXON,ENGLAND

[5] AOYAMA GAKUIN UNIV,DEPT PHYS,TOKYO 157,JAPAN

来源：

PHYSICA B | 1995年 / 213卷

关键词：

D O I：

10.1016/0921-4526(95)00132-S

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

CuGeO3 is an inorganic compound which possesses a spin-Peierls transition. We have studied the crystal structure and the phonon dynamics of CuGeO3 by neutron scattering. We found that a lattice anomaly starts to evolve significantly above the transition temperature, T-sp, and there is a drastic change below T-sp. The phonon mode over a wide energy range changes drastically at high temperature. Therefore we conclude that the inherent structural instability in the crystal structure provides favorable conditions for the lattice-spin interaction and inducers the spin-Peierls transition, i.e. lattice dimerization.

引用

页码：288 / 290

页数：3

共 12 条

[1]

ADAMS DM, 1991, J PHYS-CONDENS MAT, V3, P5191

[2] NEUTRON-SCATTERING STUDIES ON SPIN-PEIERLS MATERIAL CUGEO3 [J].

ARAI, M ;

FUJITA, M ;

UBUKATA, K ;

BOKUI, T ;

TABATA, K ;

OHTA, H ;

MOTOKAWA, M ;

OTOMO, T ;

OHYAMA, K ;

MINO, M ;

AKIMITSU, J ;

FUJITA, O .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1994, 63 (05) :1661-1665

[3]

HARRIS QJ, IN PRESS PHYS REV B

[4] 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

[5] DIMERIZATION OF CUGEO3 IN THE SPIN-PEIERLS STATE [J].

HIROTA, K ;

COX, DE ;

LORENZO, JE ;

SHIRANE, G ;

TRANQUADA, JM ;

HASE, M ;

UCHINOKURA, K ;

KOJIMA, H ;

SHIBUYA, Y ;

TANAKA, I .

PHYSICAL REVIEW LETTERS, 1994, 73 (05) :736-739

[6] 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

[7] ELECTRON-DIFFRACTION STUDY OF THE INORGANIC SPIN-PEIERLS SYSTEM CUGEO3 [J].

KAMIMURA, O ;

TERAUCHI, M ;

TANAKA, M ;

FUJITA, O ;

AKIMITSU, J .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1994, 63 (07) :2467-2471

[8] SOFT LONGITUDINAL MODES IN SPIN-SINGLET CUGEO3 [J].

LORENZO, JE ;

HIROTA, K ;

SHIRANE, G ;

TRANQUADA, JM ;

HASE, M ;

UCHINOKURA, K ;

KOJIMA, H ;

TANAKA, I ;

SHIBUYA, Y .

PHYSICAL REVIEW B, 1994, 50 (02) :1278-1281

[9] FAR INFRARED ELECTRON-SPIN-RESONANCE STUDY OF SPIN-PEIERLS COMPOUND MEM(TCNQ)2 [J].

MATSUDA, Y ;

SAKAKIBARA, T ;

GOTO, T ;

ITO, Y .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1986, 55 (09) :3225-3233

[10] NEUTRON-SCATTERING STUDY ON THE SPIN-PEIERLS TRANSITION IN A QUASI-ONE-DIMENSIONAL MAGNET CUGEO3 [J].

NISHI, M ;

FUJITA, O ;

AKIMITSU, J .

PHYSICAL REVIEW B, 1994, 50 (09) :6508-6510

← 1 2 →