Bose-glass transition in highly anisotropic BSCCO and isotropic (K,Ba)BiO3 heavy ion irradiated single crystals
✍ Scribed by L. Ammor; A. Ruyter
- Book ID
- 103890212
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 696 KB
- Volume
- 405
- Category
- Article
- ISSN
- 0921-4534
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✦ Synopsis
The current-voltage characteristics has been investigated by transport measurements in highly anisotropic Bi 2 Sr 2 CaCu 2 O 8þd and isotropic (K,Ba)BiO 3 single crystals irradiated in the direction parallel with to c-axis. We show that, for B / =10 < H < B / (where B / is the matching field), the same scaling functions can be used to describe the transition in these two systems emphasizing the universality of this transition. The field and sample-independent critical exponents which were found to be m ? ¼ 1:1 AE 0:1, z ¼ 5:3 AE 0:2 and að m == =m ? Þ ¼ 2, are in a very good agreement with numerical simulations in the case of strongly screened vortex line interactions. Surprisingly, in (K,Ba)BiO 3 , the Boseglass formalism can be used to describe the transport properties up to magnetic fields about as twice as the matching field.