2000/10/27 by Tôru Sakai, Toru Sakai, Yoshinori Takahashi · 1 citation
Engineering · Physics and Astronomy · #Antiferromagnetism #Correlation function (quantum field theory) #Cuprate #Neutron scattering #Phase Equilibria and Thermodynamics #Physics of Superconductivity and Magnetism #Pseudogap #Scattering #Spin (aerodynamics) #Superconductivity #Superconductivity in MgB2 and Alloys #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1143/jpsj.70.272
7 pages, Revtex, with 10 eps figures, to appear in J. Phys. Soc. Jpn. (Vol. 70, No. 1)
arxiv created 2000/10/27 · openalex publication_date 2001/01/15 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The pseudogap phenomena observed on cuprate high temperature superconductors are investigated based on the exact diagonalization method on the finite cluster t-J model. The results show the presence of the gap-like behavior in the temperature dependence of various magnetic properties; the NMR relaxation rate, the neutron scattering intensity and the static susceptibility. The calculated spin correlation function indicates that the pseudogap behavior arises associated with the development of the antiferromagnetic spin correlation with decreasing the temperature. The numerical results are presented to clarify the model parameter dependence, that covers the realistic experimental situation. The effect of the next-nearest neighbor hopping t' is also studied.