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荷斯坦模型中的平移不变双极化子与超导性

A translation invariant bipolaron in the Holstein model and superconductivity.

作者信息

Lakhno Victor

机构信息

Institute of Mathematical Problems of Biology, Keldysh Institute of Applied Mathematics, Russian Academy of Sciences, Pushchino, Moscow Region 142290 Russia.

出版信息

Springerplus. 2016 Aug 8;5(1):1277. doi: 10.1186/s40064-016-2975-x. eCollection 2016.

DOI:10.1186/s40064-016-2975-x
PMID:27547652
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4977270/
Abstract

Large-radius translation invariant (TI) bipolarons are considered in a one-dimensional Holstein molecular chain. Criteria of their stability are obtained. The energy of a translation invariant bipolaron is shown to be lower than that of a bipolaron with broken symmetry. The results obtained are applied to the problem of superconductivity in 1D-systems. It is shown that TI-bipolaron mechanism of Bose-Einstein condensation can support superconductivity even for infinite chain.

摘要

在一维荷斯坦分子链中考虑大半径平移不变（TI）双极化子。得到了它们的稳定性判据。结果表明，平移不变双极化子的能量低于对称性破缺的双极化子的能量。所得结果应用于一维系统中的超导问题。结果表明，即使对于无限长链，玻色 - 爱因斯坦凝聚的TI - 双极化子机制也能支持超导性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/31a5/4977270/74e1308c95f9/40064_2016_2975_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/31a5/4977270/a6ae207a1696/40064_2016_2975_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/31a5/4977270/3b419b44433d/40064_2016_2975_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/31a5/4977270/1829b479b0e5/40064_2016_2975_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/31a5/4977270/0ac58060bf2a/40064_2016_2975_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/31a5/4977270/d67a7a854a5e/40064_2016_2975_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/31a5/4977270/adf9c302f9ff/40064_2016_2975_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/31a5/4977270/74e1308c95f9/40064_2016_2975_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/31a5/4977270/a6ae207a1696/40064_2016_2975_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/31a5/4977270/3b419b44433d/40064_2016_2975_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/31a5/4977270/1829b479b0e5/40064_2016_2975_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/31a5/4977270/0ac58060bf2a/40064_2016_2975_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/31a5/4977270/d67a7a854a5e/40064_2016_2975_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/31a5/4977270/adf9c302f9ff/40064_2016_2975_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/31a5/4977270/74e1308c95f9/40064_2016_2975_Fig7_HTML.jpg

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