Temperature dependent noise in YBa2Cu3Oy thin film

Herng-Er Horng, J. M. Wu, Shieh-Yueh Yang, Hong-Chang Yang, J. D. Chern

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We measured the noise power spectral density at a constant current (3 mA in this report) and various temperatures to study the origin of the noise in the high-Tc superconducting YBa2Cu3Oy thin film. The range of the measuring temperature T was from 11 to 90 K. It is found that the noise power spectrum curves all overlap and decrease smoothly as the frequency f increases for T < 84.3 K whereas a transition begin to develop as T > 84.3 K, then drop after T > 85.6 K. Furthermore, the temperature dependent noise power density at f = 0.2 Hz can be fitted to the thermal fluctuation model. This result suggests that the noise may come from the resistance fluctuation which is caused by the thermal fluctuation. The causes will be also discussed in terms of the flux motion of the high-Tc superconductors.

Original languageEnglish
Pages (from-to)1433-1434
Number of pages2
JournalPhysica C: Superconductivity and its applications
Volume282-287
Issue numberPART 3
DOIs
Publication statusPublished - 1997 Jan 1

Fingerprint

Thin films
thin films
Superconducting films
Power spectral density
Power spectrum
Temperature
Superconducting materials
temperature
noise spectra
Fluxes
power spectra
radiant flux density
causes
curves
Hot Temperature

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this

Temperature dependent noise in YBa2Cu3Oy thin film. / Horng, Herng-Er; Wu, J. M.; Yang, Shieh-Yueh; Yang, Hong-Chang; Chern, J. D.

In: Physica C: Superconductivity and its applications, Vol. 282-287, No. PART 3, 01.01.1997, p. 1433-1434.

Research output: Contribution to journalArticle

Horng, Herng-Er ; Wu, J. M. ; Yang, Shieh-Yueh ; Yang, Hong-Chang ; Chern, J. D. / Temperature dependent noise in YBa2Cu3Oy thin film. In: Physica C: Superconductivity and its applications. 1997 ; Vol. 282-287, No. PART 3. pp. 1433-1434.
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