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首页> 外文期刊>Physica, C. Superconductivity and its applications >Phase diagram in 2D Frohlich model of metal at arbitrary carriers density: Pseudogap versus doping
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Phase diagram in 2D Frohlich model of metal at arbitrary carriers density: Pseudogap versus doping

机译:金属在任意载流子密度下的二维Frohlich模型中的相图:Pseudogap与掺杂

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It is shown that in 2D system of the fermions with simplest indirect boson-induced attraction (through the Einstein phonon exchange as an example) along with the normal and superconducting phases there arises a new (called 'abnormal normal' or pseudogap) one where the absolute value of the order parameter is finite but its phase is a random quantity. It is important that this new phase really exists at low carriers density only, i.e. it shrinks when doping increases. The relevance of the results obtained with dependence of pseudogap on doping in high-temperature superconductors is speculated. (C) 1998 Elsevier Science B.V. [References: 22]
机译:结果表明,在费米子的二维系统中,最简单的间接玻色子诱导的吸引(通过爱因斯坦声子交换为例)以及正常和超导相会出现一个新的(称为“异常正常”或伪间隙),其中顺序参数的绝对值是有限的,但其相位是随机数。重要的是,该新相仅在低载流子密度下才真正存在,即当掺杂增加时它会收缩。推测了与伪间隙有关的结果与高温超导体中掺杂的相关性。 (C)1998 Elsevier Science B.V. [参考:22]

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