Anomalously enhanced noise spectral densities of YBCO micro-bridge near the resistive transition region

✍ Scribed by K.H. Han; Sung-Ik Lee; S.H. Lee; Sung-Ho Suck Salk; H.J. Shin

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 228 KB
• Volume: 185-189
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(91)91046-7

✦ Synopsis

We have systematically measured the normalized noise power spectral density ( S,(f) = Sv(f)/V z ) of the ¥BCO microbridge and found VZ/~ dependence. Near the zero resistance temperature (T~,,ro), S.(f) increases more than eight orders of magnitude. Moreover, ~ chan'~es from 1 to 2. Furthermore, once a magnetic field is applied, S.(f) showed a marked increase near T . This anomaly is attributed to .c0zeFo _ •.

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