Intrinsic Tunneling Spectra of Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$ near Optimal Doping

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dc.creatorZhao, S. P.
dc.creatorZhu, X. B.
dc.creatorWei, Y. F.
dc.date2007-03-07
dc.date2007-03-13
dc.date.accessioned2026-07-07T07:51:16Z
dc.date.available2026-07-07T07:51:16Z
dc.descriptionWe report tunneling spectra of near optimally doped Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$ intrinsic Josephson junctions with area of 0.09 $μ$m$^2$, which avoid some fundamental difficulties in the previous tunneling experiments and allow a stable temperature-dependent measurement. A d-wave Eliashberg analysis shows that the spectrum at 4.2 K can be well fitted by considering electron couplings to a bosonic magnetic resonance mode and a broad high-energy continuum. Above $T_c$, the spectra show a clear pseudogap that persists up to 230 K, and a crossover can be seen indicating two different pseudogap phases existing above $T_c$. The intrinsic electron tunneling nature is discussed in the analysis.
dc.description4 pages, 4 figures, 1 table
dc.identifierhttps://arxiv.org/abs/cond-mat/0703177
dc.identifierhttp://arxiv.org/abs/cond-mat/0703177
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/125454
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleIntrinsic Tunneling Spectra of Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$ near Optimal Doping
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