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Radio frequency vortex dynamics in heavy ion irradiated (Bi–Pb)2Sr2Ca2Cu3O10 superconducting platelets by S Patnaik; R.C Budhani; M Konczykowski; Y.-L Wang; M Suenaga is a Physics and Astronomy article available to read on EtoBox.

What is Radio frequency vortex dynamics in heavy ion irradiated (Bi–Pb)2Sr2Ca2Cu3O10 superconducting platelets about?

We report measurements of vortex dynamics in heavy ion irradiated (Bi±Pb) 2 Sr 2 Ca 2 Cu 3 O 10 superconducting tapes in the high-temperature (T P 60 K) and low-®eld (l 0 H `0X3 T) regimes. The temperature, magnetic ®eld strength and angular dependences of radio-frequency (RF) penetration depth kH Y T are measured and compared with the behavior of unirradiated samples. The pinning force constant, k p , and viscosity coecient g are extracted from the ®eld dependence of kH Y T . The angular dependence of the RF penetration depth in samples irradiated at the ®eld equivalent ̄uence of 0.5 and 3.0 T is minimum when the external ®eld is brought into alignment with the columnar defects (CDs). While this characteristic feature of anisotropic pinning due to CDs disappear in a temperature regime where J c is high, in the vortex liquid state closer to T c , this feature grows with the increasing ®eld strength. The overall changes in g, k p and the angular dependence of kH Y T are discussed in the framework of the Bose glass theory for vortex dynamics in highly layered superconductors.

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Author

S Patnaik; R.C Budhani; M Konczykowski; Y.-L Wang; M Suenaga

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0921-4534)

Published

2001

Language

EN

Field

Physics and Astronomy (Physical Sciences)