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Thickness-tuned Superconductor-to-Insulator Transitions under magnetic field in a-NbSi

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 نشر من قبل Claire Marrache-Kikuchi
 تاريخ النشر 2008
  مجال البحث فيزياء
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We have studied the thickness-induced superconductor-to-insulator transition in the presence of a magnetic field for a-NbSi thin films. Analyzing the critical behavior of this system within the dirty boson model, we have found a critical exponents product of $ u_d z$ > 0.4. The corresponding phase diagram in the (H,d) plane is inferred. This small exponent product as well as the non-universal value of the critical resistance found at the transition call for further investigations in order to thoroughly understand these transitions.



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