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Fluctuation conductivity in layered d-wave superconductors near critical disorder

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Abstract.

We consider the fluctuation conductivity in the critical region of a disorder induced quantum phase transition in layered d-wave superconductors. We specifically address the fluctuation contribution to the system’s conductivity in the limit of large (quasi-two-dimensional system) and small (quasi-three-dimensional system) separation between adjacent layers of the system. Both in-plane and c-axis conductivities were discussed near the point of insulator-superconductor phase transition. The value of the dynamical critical exponent, z = 2, permits a perturbative treatment of this quantum phase transition under the renormalization group approach. We discuss our results for the system conductivities in the critical region as function of temperature and disorder.

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Authors and Affiliations

  1. Department of Theoretical Physics, University of Cluj, 3400, Cluj-Napoca, Romania

    I. Tifrea, D. Bodea, I. Grosu & M. Crisan

  2. Department of Physics and Astronomy, University of Iowa, 52245, Iowa City, IA, USA

    I. Tifrea

  3. Max Plank Institute for the Physics of Complex Systems, 01187, Dresden, Germany

    D. Bodea

Authors
  1. I. Tifrea
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  2. D. Bodea
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  3. I. Grosu
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  4. M. Crisan
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Corresponding author

Correspondence to M. Crisan.

Additional information

Received: 10 October 2003, Published online: 23 December 2003

PACS:

74.40. + k Fluctuations (noise, chaos, nonequilibrium superconductivity, localization, etc.) - 73.43.Nq Quantum phase transitions

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Tifrea, I., Bodea, D., Grosu, I. et al. Fluctuation conductivity in layered d-wave superconductors near critical disorder. Eur. Phys. J. B 36, 377–383 (2003). https://doi.org/10.1140/epjb/e2003-00356-3

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  • DOI: https://doi.org/10.1140/epjb/e2003-00356-3

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