Effects of interaction and polarization on spin-charge separation: A time-dependent spin-density-functional theory study
Effects of interaction and polarization on spin-charge separation: A time-dependent spin-density-functional theory study
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相互作用和极化对自旋电荷分离的影响:时间相关的自旋密度泛函理论研究
DOI:
10.1103/physrevb.81.104306
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发表时间:
2010-03
期刊:
影响因子:
--
通讯作者:
Gao Xianlong
中科院分区:
文献类型:
--
作者:
Gao Xianlong
We calculate the nonequilibrium dynamic evolution of a one-dimensional system of two-component fermionic atoms after a strong local quench by using a time-dependent spin-density-functional theory. The interaction quench is also considered to see its influence on the spin-charge separation. It is shown that the charge velocity is larger than the spin velocity for the system of on-site repulsive interaction (Luttinger liquid), and vise versa for the system of on-site attractive interaction (Luther-Emery liquid). We find that both the interaction quench and polarization suppress the spin-charge separation.
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影响因子:
2.9
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通讯作者:
E. Zhao;W. Liu
DOI:
10.1103/physrevb.78.195109
发表时间:
2008-05
期刊:
Phys. Rev. B
影响因子:
--
作者:
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通讯作者:
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影响因子:
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