Superconducting pairing symmetry in frustrating t-J model: Electronic Raman absorption |
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Authors: | Email author" target="_blank">Hong-Yan?LuEmail author Da?Wang Li-Peng?Shi San?Chen Li-Qin?Zhang Pi-Feng?Gong Bao-Tong?Liu |
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Institution: | 1.School of Physics and Electronic Information,Huaibei Normal University,Huaibei,P.R.
China;2.Department of Physics,University of
California,La Jolla,USA;3.Department of Mathematics and
Information Science,North China Institute of Water Conservancy and Hydroelectric
Power,Zhengzhou,P.R.
China |
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Abstract: | Motivated by the controversy on the pairing symmetry of layered organic superconductors,we study electronic Raman scattering spectra on a frustrating lattice. A two-dimensionalt-t′-J-J′model and the Gutzwiller projectional variational method is used. The pairing symmetry isobtained self-consistently. Basing on this, we perform a systematic investigation of thedensity of states and electronic Raman spectra as a function oft′/t: ranging fromt′ = 0, the square lattice model, tot′ = t, the isotropic triangular latticemodel. We discuss the polarization dependence of the Raman spectra, which could be used toidentify the relevant superconducting pairing symmetry of frustrating systems such aslayered organic superconductors. |
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