Pseudogap, Superconducting Gap, and Fermi Arcs in Underdoped Cuprate Superconductors

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dc.creatorWen, Hai-Hu
dc.creatorShan, Lei
dc.creatorWen, Xiao-Gang
dc.creatorWang, Yue
dc.creatorGao, Hong
dc.creatorLiu, Zhi-Yong
dc.creatorZhou, Fang
dc.creatorXiong, Jiwu
dc.creatorTi, Wenxin
dc.date2005-02-16
dc.date.accessioned2026-07-07T03:03:46Z
dc.date.available2026-07-07T03:03:46Z
dc.descriptionThrough the measurements of magnetic field dependence of specific heat in $La_{2-x}Sr_xCuO_4$ in zero temperature limit, we find that the nodal slope $v_Δ$ of the superconducting gap has a very similar doping dependence of the pseudogap temperature $T^*$ or value $Δ_p$. Meanwhile the maximum quasiparticle gap derived from $v_Δ$ is quite close to $T^*$. Both indicate a close relationship between the pseudogap and superconductivity. It is also found that $T_c \approx βv_Δγ_n(0)$, where $γ_n(0)$ is the extracted zero temperature value of the normal state specific heat coefficient which is proportional to the size of the residual Fermi arc $k_{arc}$. These observations mimic the key predictions of the SU(2) slave boson theory based on the general resonating-valence-bond (RVB) picture.
dc.description4 pages, 3 figures, RevTeX4
dc.identifierhttps://arxiv.org/abs/cond-mat/0502377
dc.identifierhttp://arxiv.org/abs/cond-mat/0502377
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/25875
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titlePseudogap, Superconducting Gap, and Fermi Arcs in Underdoped Cuprate Superconductors
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