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- W2076158420 abstract "Tunneling measurements have been carried out by the point-contact technique on four members of the Bi cuprates: on the (Bi,Pb)2Sr2Ca2Cu3O10+x (2223), Bi2Y0.1Sr1.9CaCu2O8+x (Y2212), Bi2.1Sr1.9CaCu2O8+x (2212) superconductors at 4.2 K and on Bi2.07Sr1.8CuO6+x (2201) at 2 K. The polycrystalline samples have the critical temperature Tc = 108 K, 94 K, 85 K and 7 K, respectively.All measured tunneling spectra (tunneling conductance versus the bias voltage) reveal a significant reduction below a certain voltage indicating the superconducting gap edge. The BCS-like formula for the superconducting density of states accounting for some additional smearing can successfully fit the experimental data, particularly at the gap position. Discrepancies found at lower voltages inside the gap may indicate a possible anisotropy of the order parameter, but an extrinsic origin (like inhomogenity in the sample, irregularities in the tunnel barrier) is possible as well. The obtained values of the reduced superconducting energy gap 2Δ/kBTc amount to 6–7 for all four systems. Consequently, our results found the gap Δ scaling with the transition temperature Tc in the Bi cuprates." @default.
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- W2076158420 date "2006-01-01" @default.
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- W2076158420 title "Effects of the disruption of actin filaments and microtubules on the tensile properties of fibroblasts" @default.
- W2076158420 doi "https://doi.org/10.1016/s0021-9290(06)85409-6" @default.
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