Unscaling Superconducting Parameters with $T_c$ for Bi-2212 and Bi-2223: A Magnetotransport Study in the Superconductive Fluctuation Regime

Abstract

To investigate the origin of the enhanced $T_c$ ($\approx$ 110 K) of the trilayer cuprate superconductor Bi${}_2$Sr${}_2$Ca${}_2$Cu${}_3$O${}_{10+\delta }$ (Bi-2223), we have performed systematic magnetoresistance (MR) measurements on this superconductor, as well as on the bilayer superconductor, Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ (Bi-2212). The in-plane coherence length, ${\xi }_{ab}$, and the specific-heat jump, $\Delta C$, have been estimated using the theory of renormalized superconductive fluctuations, and the doping dependence of these parameters has been qualitatively explained using the Fermi arc approach. A detailed comparison of the superconducting parameters with $T_c$ for these compounds suggests that an additional superconducting condensation energy exists, due to an increase in the number of stacking CuO${}_2$ planes in a unit cell.

17 pages, 5 figures, to appear in JPSJ

References in corpus (4)

• Distinct Fermi-Momentum Dependent Energy Gaps in Deeply Underdoped Bi2212
• Low-Energy Electronic Structure of the High-Tc Cuprates La2-xSrxCuO4 Studied by Angle-resolved Photoemission Spectroscopy
• An explanation for a universality of transition temperatures in families of copper oxide superconductors
• Doping Dependencies of Onset Temperatures for the Pseudogap and Superconductive Fluctuation in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$, Studied from both In-Plane and Out-of-Plane Magnetoresistance Measurements

Cited by in corpus (4)

• Revised phase diagram of the high-$T_c$ cuprate superconductor Pb-doped Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ revealed by anisotropic transport measurements
• Effects of vortex and antivortex excitations in underdoped Bi${}_2$Sr${}_2$Ca${}_2$Cu${}_3$O${}_{10+\delta }$ bulk single crystals
• Fabrication of Superconducting YBa2Cu4O8 Film via Coprecipitation
• Onset Temperatures for Superconducting Fluctuations in Te-annealed FeTe${}_{1-x}$Se${}_x$ Single Crystals: Evidence for the BCS-BEC Crossover