Vortex-unbinding and finite-size effects in Tl2Ba2CaCu2O8 thin films

Hao Jin; Hai-Hu Wen

doi:10.1103/PhysRevB.68.094516

Vortex-unbinding and finite-size effects in Tl2Ba2CaCu2O8 thin films

Superconductivity 2017-03-23 v3

Authors: Hao Jin , Hai-Hu Wen

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Abstract

Current-voltage ( $I$ - $V$ ) characteristics of Tl $_2$ Ba $_2$ CaCu $_2$ O $_8$ thin films in zero magnetic field are measured and analyzed with the conventional Kosterlitz-Thouless-Berezinskii (KTB) approach, dynamic scaling approach and finite-size scaling approach, respectively. It is found from these results that the $I$ - $V$ relation is determined by the vortex-unbinding mechanism with the KTB dynamic critical exponent $z=2$ . On the other hand, the evidence of finite-size effect is also found, which blurs the feature of a phase transition.

Keywords

vortex-unbinding Kosterlitz-Thouless-Berezinskii transition finite-size effects thin films current-voltage characteristics dynamic scaling

Cite

@article{arxiv.cond-mat/0302618,
  title  = {Vortex-unbinding and finite-size effects in Tl2Ba2CaCu2O8 thin films},
  author = {Hao Jin and Hai-Hu Wen},
  journal= {arXiv preprint arXiv:cond-mat/0302618},
  year   = {2017}
}

Comments

Typo corrected & reference added

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