High-field electron spin resonance of Cu1-xZnxGeO3

被引：18
|
作者：
Hassan, AK [1 ]
Pardi, LA
Martins, GB
Cao, G
Brunel, LC
机构：
[1] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA
[2] Florida State Univ, Dept Phys, Tallahassee, FL 32310 USA
来源：
PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 09期
关键词：
D O I：
10.1103/PhysRevLett.80.1984
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
High-field electron spin resonance measurements were made on powder samples of Cu1-xZnxGeO3 (x = 0.00, 0.01, 0.92, 0.03, and 0.05) at different frequencies (95, 110, 190, 220, 330, and 440 GHz) at low temperatures. The spectra of the doped samples show resonances whose positions are dependent on Zn concentration, frequency, and temperature. The analysis of the intensity variation of these lines with temperature allows us to identify them as originating from transitions within states situated inside the spin Peierls gap. A qualitative explanation of the details of the spectra is possible if we assume that these states in the gap are associated with "loose" spins created near the Zn impurities, as recently theoretically predicted. [S0031-9007(98)05429-5].
引用
收藏
页码：1984 / 1987
页数：4
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