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掺杂蓝青铜的低频电压噪声研究

LOW FREQUENCY VOLTAGE NOISE IN IMPURITY- DOPED BLUE BRONZES

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【作者】 田明亮毛志强张裕恒石兢梅雪飞田德诚

【Author】 TIAN MING-LIANG MAO ZHI-QIANG ZHANG YU-HENGLaboratory of Structural Analysis, University of Science and Technology of China, Hefei 230026 SHI JING MEI XUE-FEI TIAN DE-CHENGDepartment of Physics, Wuhan University, Wuhan 430072

【机构】 中国科学技术大学结构分析开放研究实验室武汉大学物理系武汉大学物理系 合肥 230026合肥 230026武汉 430072武汉 430072

【摘要】 通过对掺杂蓝青铜的低频宽带噪声(BBN)的研究,发现在掺杂样品中杂质和缺陷能大大的加强低频电压噪声,并且噪声的幅度、波形又强烈地与单晶在冷却过程中的初始电流状态有关,从而揭示出电荷密度波的宽带噪声可能来自于样品中宏观缺陷的微观实质。

【Abstract】 In this paper, low frequency voltage noise property in impurity-doped blue bronzes is investigated. It is found that these low frequency voltage noise can be strongly enhanced by impurities or defects, for which the amplitude and shape of the oscillations are closely related to the initial conducting current of sample during cooling. The results indicate that the origin of the broad-band noise in charge-density-wave system may result from the macroscopic defects or impurities.

  • 【文献出处】 物理学报 ,Acta Physica Sinica , 编辑部邮箱 ,1994年04期
  • 【分类号】O738
  • 【被引频次】1
  • 【下载频次】32
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