Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2006-06-05
Physics
Condensed Matter
Other Condensed Matter
Scientific paper
10.1080/09500830600993303
A cuprate superconductor model based on the analogy with atomic nuclei was shown by Iachello to have an $su(3)$ structure. The mean-field approximation Hamiltonian can be written as a linear function of the generators of $su(3)$ algebra. Using algebraic method, we derive the eigenvalues of the reduced Hamiltonian beyond the subalgebras $u(1)\bigotimes u(2)$ and $so(3)$ of $su(3)$ algebra. In particular, by considering the coherence between s- and d-wave pairs as perturbation, the effects of coherent term upon the energy spectrum are investigated.
Birman Joseph L.
Ge Mo-Lin
Jin Shuo
Pan Feng
Xie Bing-Hao
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