Non-linear oscillations of the vortices in a hollow superconducting YBaCuO cylinder

✍ Scribed by M.T. Ayvazyan; A.A. Kteyan; R.A. Vardanian

• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 425 KB
• Volume: 405
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/j.physc.2004.01.028

✦ Synopsis

A response of a hollow YBa 2 Cu 3 O 7Àd ceramic superconducting cylinder (at a mixed state) to the 100 kHz frequency alternating field was investigated. It was found that the response is non-linear and contains the odd harmonics of the excitation frequency. The amplitudes of the first, third and fifth harmonics are measured depending on an alternating field value h 6 1 Oe, applied to the cylinder external surface, and on a stationary magnetic field H 6 500 Oe driving the sample to the mixed state. For the results analysis a theoretical model of the vortices non-linear oscillations is proposed based on a non-linear vortex-vortex and vortex-surface interaction.