ELECTRON-SPIN-RESONANCE OF SPIN-PEIERLS MATERIAL CUGEO3

被引：57

作者：

OHTA, H ^{[1
]}

IMAGAWA, S ^{[1
]}

USHIROYAMA, H ^{[1
]}

MOTOKAWA, M ^{[1
]}

FUJITA, O ^{[1
]}

AKIMITSU, J ^{[1
]}

机构：

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

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1994年 / 63卷 / 08期

关键词：

CUGEO3; SPIN-PEIERLS TRANSITION; MAGNETIZATION; SUBMILLIMETER WAVE ESR; G-VALUE; SPIN-PEIERLS GAP;

D O I：

10.1143/JPSJ.63.2870

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Magnetization and submillimeter wave ESR measurements have been performed on single crystals of CuGeO3 using a pulsed high magnetic field. Magnetization jumps are observed at 12.8, 12.5 and 13.5 T for a-, b- and c-axes, respectively, at 4.2 K. The temperature dependences of the linewidth and the integrated intensity of the ESR signal are discussed in connection with the conventional spin-Peierls systems, and the excitation gap against the magnetic field is estimated when the field is applied along the a-axis. ESR has been observed in the magnetic phase above the critical field H(c) and the g-values have different values from those in the spin-Peierls phase. The origin of this difference is discussed.

引用

页码：2870 / 2873

页数：4

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