作者
Janez Bonča, Jacek Cichoń, Marcin Mierzejewski
发表日期
2020/12
期刊
Journal of Superconductivity and Novel Magnetism
卷号
33
页码范围
3735-3744
出版商
Springer US
简介
We consider a disordered chain hosting quantum particles which form bipolarons due to coupling to magnetic excitations and study how the binding energy depends on the strength of disorder. We demonstrate that disorder may increase or decrease the binding energy, depending on the kinetic energy of particles as well as on the density of bipolarons and the range of pairing interaction. We show numerical results obtained for the t-J chains and for particles coupled to hard-core bosons and discuss simplified models which explain the essential physical mechanisms. We derive a formula for the dependence of the binding energy on disorder in the static limit.
学术搜索中的文章
J Bonča, J Cichoń, M Mierzejewski - Journal of Superconductivity and Novel Magnetism, 2020