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1/fresistance noise in the large magnetoresistance manganites

 

作者: G. B. Alers,   A. P. Ramirez,   S. Jin,  

 

期刊: Applied Physics Letters  (AIP Available online 1996)
卷期: Volume 68, issue 25  

页码: 3644-3646

 

ISSN:0003-6951

 

年代: 1996

 

DOI:10.1063/1.115757

 

出版商: AIP

 

数据来源: AIP

 

摘要:

Resistance noise has been measured in thin films of La0.6Y0.07Ca0.33MnO3at the ferromagnetic metal to paramagnetic‐insulator transition where a large magnetoresistance is observed. Fluctuations in resistance were found to have a 1/fpower law form throughout the transition wherefis frequency. This intrinsic 1/fnoise is much larger than what is typical for metallic films and is consistent with the fluctuation‐dissipation theorem and magnetization fluctuations in the ferromagnetic phase. The implications of this large low frequency noise for practical magnetoresistive devices will be addressed. ©1996 American Institute of Physics.

 

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