Dynamical response and competing orders in two-band Hubbard model

Autor:	Niyazi, A., Geffroy, D., Kuneš, J.
Rok vydání:	2020
Předmět:	Condensed Matter - Strongly Correlated Electrons Quantum Physics
Zdroj:	Phys. Rev. B 102, 085159 (2020)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.102.085159
Popis:	We present a dynamical mean-field study of two-particle dynamical response functions in two-band Hubbard model across several phase transitions. We observe that the transition between theexcitonic condensate and spin-state ordered state is continuous with a narrow strip of supersolidphase separating the two. Approaching transition from the excitonic condensate is announced bysoftening of the excitonic mode at theMpoint of the Brillouin zone. Inside the spin-state orderedphase there is a magnetically ordered state with 2x2 periodicity, which has no precursor in thenormal phase. Comment: 8 pages, 9 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2006.09058 Zobrazit plný text záznamu View this record from Arxiv