Population imbalance in the extended Fermi-Hubbard model

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We study the interplay between population imbalance in a two-component fermionic system and nearest-neighbor interaction using the matrix product states method. Our analysis reveals a parameter regime for the existence of the Fulde-Ferrell-Larkin-Ovchinnikov phase. Furthermore, we find distinct evidence for the presence of hidden order in the system. We present an effective model to understand the emergent oscillations in the string correlations due to the imbalance and show how they can become an efficient tool to investigate systems with imbalance.


Original languageEnglish
Article number075116
Pages (from-to)1-7
Number of pages7
JournalPhysical Review B
Issue number7
Publication statusPublished - 9 Aug 2016
MoE publication typeA1 Journal article-refereed

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