A. M. Tsvelik

Publications (2)7.37 Total impact

• Source

  Available from: arxiv.org

  Article: Two-dimensional superconducting fluctuations in stripe-ordered La1.875Ba0.125CuO4.

  Q Li, M Hücker, G D Gu, A M Tsvelik, J M Tranquada
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  ABSTRACT: Recent spectroscopic observations of a d-wave-like gap in stripe-ordered La(2-x)Ba(x)CuO(4) with x=1/8 have led us to critically analyze the anisotropic transport and magnetization properties of this material. The data suggest that concomitant with the spin ordering is an electronic decoupling of the CuO(2) planes. We observe a transition (or crossover) to a state of two-dimensional (2D) fluctuating superconductivity, which eventually reaches a 2D superconducting state below a Berezinskii-Kosterlitz-Thouless transition. Thus, it appears that the stripe order in La(2-x)Ba(x)CuO(4) frustrates three-dimensional superconducting phase order, but is fully compatible with 2D superconductivity and an enhanced T(c).
  Physical Review Letters 09/2007; 99(6):067001. · 7.37 Impact Factor
• Source

  Available from: ArXiv

  Article: Two-Dimensional Superconducting Fluctuations in Stripe-Ordered La(1.875)Ba(0.125)CuO(4)

  Q Li, M. Huecker, G. D. Gu, A. M. Tsvelik, J. M. Tranquada
  [show abstract] [hide abstract]
  ABSTRACT: Recent spectroscopic observations of a d-wave-like gap in stripe-ordered La(2-x)Ba(x)CuO(4) with x=1/8 have led us to critically analyze the anisotropic transport and magnetization properties of this material. The data suggest that concomitant with the spin ordering is an electronic decoupling of the CuO(2) planes. We observe a transition (or crossover) to a state of two-dimensional (2D) fluctuating superconductivity, which eventually reaches a 2D superconducting state below a Berezinskii-Kosterlitz-Thouless transition. Thus, it appears that the stripe order in La(2-x)Ba(x)CuO(4) frustrates three-dimensional superconducting phase order, but is fully compatible with 2D superconductivity and an enhanced T_c.
  04/2007;