1,721,110 research outputs found
Fluctuation conductivity of layered high Tc superconductors: theoretical analysis of recent experiments
No full textRole of Cooper Inter-electron interaction with pseudogaps opening in HTS tunneling experiments
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On the character of the fluctuating diamagnetism above the superconducting transition in La1.9 Sr0.1 CuO4
No full textFluctuations effects and anomalous diamagnetism in YBCO124 and in underdoped YBCO124 from susceptibility and 63Cu Nuclear
No full textOn the character of the fluctuating diamagnetism above the superconducting transition in La1.9Sr0.1CuO4
No full textIsothermal magnetization curves above the transition temperature T c in a single crystal of superconducting underdoped cuprate La 1.9Sr0.1CuO4 are reported. In the low-field range, H≤1kOe, and for T within Tc -2 K, evidence is given of a fluctuating diamagnetism different from the one expected from the Ginzburg-Landau theory in finite fields. The experimental findings are related to phase fluctuations of order parameter in "droplets" having local Tcloc higher than the bulk resistive Tc, a general phenomenon in cuprates and intrinsic consequence of charge inhomogeneities at mesoscopic level. The temperature dependence of the droplets size suggests a percolative character of the transition
On the character of the fluctuating diamagnetism above the superconducting transition in La1.9Sr0.1CuO4
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