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arXiv 0911.4401cond-mat.str-el
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电子-晶格相互作用对含两种载流子的强关联电子系统相分离的影响

Effect of electron-lattice interaction on the phase separation in strongly correlated electron systems with two types of charge carriers

A. O. Sboychakov, A. L. Rakhmanov, K. I. Kugel

摘要:

研究了用两带哈伯德模型描述的强关联电子系统中电子-晶格相互作用的影响。考虑了电子-晶格相互作用的双重效应:在非对角项下,它改变了有效带宽,而在对角项下,它改变了能带和化学势的位置。结果表明,这种相互作用显着影响的掺杂范围对应的电子相分离,甚至可以导致跳跃式的转变状态之间的不同值的应变。

英文摘要:

The effect of electron-lattice interaction is studied for a strongly correlated electron system described by the two-band Hubbard model. A two-fold effect of electron-lattice interaction is taken into account: in non-diagonal terms, it changes the effective bandwidth, whereas in diagonal terms, it shifts the positions of the bands and the chemical potential. It is shown that this interaction significantly affects the doping range corresponding to the electronic phase separation and can even lead to a jump-like transition between states with different values of strains.

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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