Intermediate coupling model of cuprates: Adding fluctuations to a weak coupling model of pseudogap and superconductivity competition
We demonstrate that many features ascribed to strong correlation effects in various spectroscopies of the cuprates are captured by a calculation of the self-energy incorporating effects of spin and charge fluctuations. The self-energy is calculated over the full doping range from half-filling to the...
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| Veröffentlicht in: | Journal of electron spectroscopy and related phenomena 2010-07, Vol.181 (1), p.23-27 |
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| container_title | Journal of electron spectroscopy and related phenomena |
| container_volume | 181 |
| creator | Markiewicz, R.S. Das, Tanmoy Basak, Susmita Bansil, A. |
| description | We demonstrate that many features ascribed to strong correlation effects in various spectroscopies of the cuprates are captured by a calculation of the self-energy incorporating effects of spin and charge fluctuations. The self-energy is calculated over the full doping range from half-filling to the overdoped system. In the normal state, the spectral function reveals four subbands: two widely split incoherent bands representing the remnant of the two Hubbard bands, and two additional coherent, spin- and charge-dressed in-gap bands split by a spin-density wave, which collapses in the overdoped regime. The resulting coherent subbands closely resemble our earlier mean-field results. Here we present an overview of the combined results of our mean-field calculations and the newer extensions into the intermediate coupling regime. |
| doi_str_mv | 10.1016/j.elspec.2010.05.020 |
| format | Article |
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The self-energy is calculated over the full doping range from half-filling to the overdoped system. In the normal state, the spectral function reveals four subbands: two widely split incoherent bands representing the remnant of the two Hubbard bands, and two additional coherent, spin- and charge-dressed in-gap bands split by a spin-density wave, which collapses in the overdoped regime. The resulting coherent subbands closely resemble our earlier mean-field results. 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| ispartof | Journal of electron spectroscopy and related phenomena, 2010-07, Vol.181 (1), p.23-27 |
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| language | eng ; fre ; ger |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Band spectra Bands Coherence COPPER OXIDE Cuprates ELECTRICAL CONDUCTIVITY Fluctuation JOINING MATHEMATICAL ANALYSIS Mathematical models Modeling Pseudogap Spectra Strong correlation SUPERCONDUCTIVITY Waterfall |
| title | Intermediate coupling model of cuprates: Adding fluctuations to a weak coupling model of pseudogap and superconductivity competition |
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