2005/02/16 by Hai-Hu Wen, Lei Shan, Wen, Hai-Hu +16
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #FOS: Physical sciences #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism #Strongly Correlated Electrons (cond-mat.str-el) #Superconductivity (cond-mat.supr-con) #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.48550/arxiv.cond-mat/0502377
4 pages, 3 figures, RevTeX4
arxiv created 2005/02/16 · openalex publication_date 2005/02/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Through the measurements of magnetic field dependence of specific heat in La2-xSrxCuO4 in zero temperature limit, we find that the nodal slope vΔ of the superconducting gap has a very similar doping dependence of the pseudogap temperature T^* or value Δp. Meanwhile the maximum quasiparticle gap derived from vΔ is quite close to T^*. Both indicate a close relationship between the pseudogap and superconductivity. It is also found that Tc ≈ βvΔγn(0), where γn(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 karc. These observations mimic the key predictions of the SU(2) slave boson theory based on the general resonating-valence-bond (RVB) picture.