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arXiv 0711.0156cond-mat.mtrl-sci
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恢复固体和表面交换的密度梯度膨胀

Restoring the density-gradient expansion for exchange in solids and surfaces

John P. Perdew, Adrienn Ruzsinszky, Gabor I. Csonka, Oleg A. Vydrov, Gustavo E. Scuseria, Lucian A. Constantin, Xiaolan Zhou, Kieron Burke

摘要:

成功的现代广义梯度近似(GGA)偏向于原子能。恢复交换的第一原理梯度展开在很宽的密度梯度范围内消除了这种偏差。我们介绍PBESol,一个修订的Perdew-Burke-Ernzerhof GGA,提高了致密填充固体及其表面的平衡性能。

英文摘要:

Successful modern generalized gradient approximations (GGA's) are biased toward atomic energies. Restoration of the first-principles gradient expansion for exchange over a wide range of density gradients eliminates this bias. We introduce PBEsol, a revised Perdew-Burke-Ernzerhof GGA that improves equilibrium properties of densely-packed solids and their surfaces.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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