Excitonic phases in a spatially separated electron-hole ladder model

Autor:	Vu, DinhDuy, Sarma, Sankar Das
Rok vydání:	2023
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics
Zdroj:	Phys. Rev. B 108, 235158 (2023)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.108.235158
Popis:	We obtain the numerical ground state of a one-dimensional ladder model with the upper and lower chains occupied by spatially-separated electrons and holes, respectively. Under charge neutrality, we find that the excitonic bound states are always formed, i.e., no finite regime of decoupled electron and hole plasma exists at zero temperature. The system either behaves like a bosonic liquid or a bosonic crystal depending on the inter-chain attractive and intra-chain repulsive interaction strengths. We also provide the detailed excitonic phase diagrams in the intra- and inter-chain interaction parameters, with and without disorder. We also comment on the corresponding two-dimensional electron-hole bilayer exciton condensation. Comment: 8 pages + 7 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2305.16305 Zobrazit plný text záznamu View this record from Arxiv