PARAMAGNETIC AND ANTIFERROMAGNETIC SIGNATURES IN EXACT BROAD-SPECTRUM NUMERICAL ANALYSIS OF HIGH TEMPERATURE SUPERCONDUCTORS

Authors

  • PO AKUSU Department of Physics, Nigerian Defence Academy, Kaduna
  • AOE ANIMALU Institute For Basic Research, No 4 Limpopo St. F.H.A. Maitama ABUJA

Abstract

By developing a program in MATLAB, an exact solution of a 16x16 matrix representation of the 2-D Hubbard Hamiltonian used in describing a simplified 2x1 CuO2 plane (which are known to play a significant role in HTc-superconductivity in cuprates) is revisited. A broad-spectrum analysis of the Helmholtz Free energy, F(T), and the entropy, S(T), of High-Temperature superconductors (HTS) reveal some very interesting results which include the exhibition of a paramagnetic phase in the Repulsive Hubbard model, RHM (U>0), and an antiferromagnetic behaviour of the Attractive Hubbard model, AHM (U<0); whereas, there is a low-temperature antiferromagnetic signature in both aspects of the models.

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Published

2022-04-21

How to Cite

PO AKUSU, & AOE ANIMALU. (2022). PARAMAGNETIC AND ANTIFERROMAGNETIC SIGNATURES IN EXACT BROAD-SPECTRUM NUMERICAL ANALYSIS OF HIGH TEMPERATURE SUPERCONDUCTORS. Academy Journal of Science and Engineering, 5(1), 56–63. Retrieved from https://ajse.academyjsekad.edu.ng/index.php/new-ajse/article/view/151

Issue

Vol. 5 No. 1 (2008): Academy Journal of Science and Engineering (AJSE)

Section

Articles

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