The origin of the huge 1/ƒ conduction noise in high-Tc cuprates

✍ Scribed by A. Maeda; H. Watanabe; I. Tsukada; K. Uchinokura

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 173 KB
• Volume: 185-189
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(91)91874-4

✦ Synopsis

The temperature dependence of the conduction noise was studied in the normal state of epitaxially grown films of high-T¢ cuprates Bi2Sr2Ca~_lCu,~O i (n=2, 3). We obtained the almost temperature-independent 1/f noise. The magnitude of the noise, which depends on the quality of the samples, still remains 5-6 orders of magnitude larger than in ordinary metals even in the samples with the highest quality. Possible origins are discussed both as an intragrain effect and other extrinsic effect.