Publications [#233041] of Jie Liu

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Journal Articles

  1. Liu, J; Li, Y; Lieber, CM, "Intrinsic features of Bi2Sr2CaCu2O8+ delta tunneling spectra: Scaling and symmetry of the energy gap.", Physical review. B, Condensed matterMarch,, 1994, 49(9), 6234-6238, American Physical Society (APS) [doi].
    (last updated on 2024/04/23)

    Abstract:
    Tunneling measurements have been made on a series of high-quality Bi2Sr2CaCu2O8+δ (BSCCO) single crystals with transition temperatures (Tc) ranging from 79 to 92 K. From these systematic studies it has been possible to delineate the intrinsic features of the low-energy electronic spectrum in the BSCCO materials. These results demonstrate that the magnitude of 2Δ at 4.2 K is nearly constant in the different Tc samples, and thus, that 2Δ/kTc increases as Tc decreases. In addition, intrinsic quasiparticle excitations are detected within the gap irrespective of the sample Tc's. Analyses of these electronic spectra using a variety of pairing models suggest that gap functions having a large anisotropy can provide a good fit to the experimental data. © 1994 The American Physical Society.