Magnetic interactions and the pressure phase diagram of CuGeO3

被引：35

作者：

vanLoosdrecht, PHM

Zeman, J

Martinez, G

Dhalenne, G

Revcolevschi, A

机构：

[1] MAX PLANCK INST FESTKORPERFORSCH,GRENOBLE HIGH MAGNET FIELD LAB,F-38042 GRENOBLE 9,FRANCE

[2] CNRS,F-38042 GRENOBLE 9,FRANCE

[3] UNIV PARIS 11,LAB CHIM SOLIDES,F-91405 ORSAY,FRANCE

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.78.487

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A pressure and temperature dependent Raman study of the vibrational and spin dynamics in CuGeO3 is presented. A new, low temperature, high pressure phase has been identified, and a pressure temperature phase diagram is proposed for CuGeO3. The pressure dependence of the effective exchange interaction, of the spin-Peierls gap and of the spin-Peierls temperature, strongly supports a model in which next-nearest-neighbor interactions stabilize the spin-Peierls ground state. The Raman-data allow for a quantitative estimate of the pressure dependence of the next-nearest-neighbor interactions.

引用

页码：487 / 490

页数：4

共 35 条

[11] 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

[12] 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

[13] 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

[14] Magnetic susceptibility of quasi-one-dimensional compound alpha'-NaV2O5 - Possible spin-Peierls compound with high critical temperature of 34 K [J].

Isobe, M ;

Ueda, Y .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1996, 65 (05) :1178-1181

[15] PRESSURE-INDUCED INTERCALATION AND AMORPHIZATION IN THE SPIN-PEIERLS COMPOUND CUGEO3 [J].

JAYARAMAN, A ;

WANG, SY ;

MING, LC ;

CHEONG, SW .

PHYSICAL REVIEW LETTERS, 1995, 75 (12) :2356-2359

[16] Pressure effects on the dimerization in the spin-Peierls state of CuGeO3 [J].

Katano, S ;

Fujita, O ;

Akimitsu, J ;

Nishi, M .

PHYSICAL REVIEW B, 1995, 52 (21) :15364-15367

[17] RAMAN-SCATTERING STUDY OF CUGEO3 IN THE SPIN-PEIERLS PHASE [J].

KUROE, H ;

SEKINE, T ;

HASE, M ;

SASAGO, Y ;

UCHINOKURA, K ;

KOJIMA, H ;

TANAKA, I ;

SHIBUYA, Y .

PHYSICAL REVIEW B, 1994, 50 (22) :16468-16474

[18] Investigation of the Spin-Peierls transition in CuGeO3 by Raman scattering [J].

Lemmens, P ;

Eisener, B ;

Brinkmann, M ;

Gasparov, LV ;

Guntherodt, G ;

vonDongen, P ;

Richter, W ;

Weiden, M ;

Geibel, C ;

Steglich, F .

PHYSICA B-CONDENSED MATTER, 1996, 223-24 (1-4) :535-537

[19] Spin gap and spin-phonon interaction in CuGeO3 [J].

Loa, I ;

Gronemeyer, S ;

Thomsen, C ;

Kremer, RK .

SOLID STATE COMMUNICATIONS, 1996, 99 (04) :231-235

[20] 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

← 1 2 3 4 →