Doping evolution of spin and charge excitations in the Hubbard model [electronic resource]
We shed light on how electronic correlations vary across the phase diagram of the cuprate superconductors, examining the doping evolution of spin and charge excitations in the single-band Hubbard model using determinant quantum Monte Carlo (DQMC). In the single-particle response, we observe that the...
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| Format: | Government Document Electronic eBook |
| Language: | English |
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Washington, D.C. : Oak Ridge, Tenn. :
United States. Department of Energy. Office of Basic Energy Sciences ; distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
2015.
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| Subjects: |
MARC
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| 245 | 0 | 0 | |a Doping evolution of spin and charge excitations in the Hubbard model |h [electronic resource] |
| 260 | |a Washington, D.C. : |b United States. Department of Energy. Office of Basic Energy Sciences ; |a Oak Ridge, Tenn. : |b distributed by the Office of Scientific and Technical Information, U.S. Department of Energy, |c 2015. | ||
| 300 | |a Article No. 195108 : |b digital, PDF file. | ||
| 336 | |a text |b txt |2 rdacontent. | ||
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| 500 | |a Published through SciTech Connect. | ||
| 500 | |a 11/05/2015. | ||
| 500 | |a Physical Review. B, Condensed Matter and Materials Physics 92 19 ISSN 1098-0121; PRBMDO AM. | ||
| 500 | |a Y. F. Kung; E. A. Nowadnick; C. J. Jia; S. Johnston; B. Moritz; R. T. Scalettar; T. P. Devereaux. | ||
| 500 | |a Univ. of California, Davis, CA (United States) | ||
| 520 | 3 | |a We shed light on how electronic correlations vary across the phase diagram of the cuprate superconductors, examining the doping evolution of spin and charge excitations in the single-band Hubbard model using determinant quantum Monte Carlo (DQMC). In the single-particle response, we observe that the effects of correlations weaken rapidly with doping, such that one may expect the random phase approximation (RPA) to provide an adequate description of the two-particle response. In contrast, when compared to RPA, we find that significant residual correlations in the two-particle excitations persist up to 40% hole and 15% electron doping (the range of dopings achieved in the cuprates). Ultimately, these fundamental differences between the doping evolution of single- and multi-particle renormalizations show that conclusions drawn from single-particle processes cannot necessarily be applied to multi-particle excitations. Eventually, the system smoothly transitions via a momentum-dependent crossover into a weakly correlated metallic state where the spin and charge excitation spectra exhibit similar behavior and where RPA provides an adequate description. | |
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| 952 | f | f | |p Can circulate |a University of Colorado Boulder |b Online |c Online |d Online |e E 1.99:1253321 |h Superintendent of Documents classification |i web |n 1 |