Exact Plaquette-Ordered Ground States with Exact Edge States of the Generalized Hubbard Model in Corner Sharing Lattices

Autor:	Nakatsuji, Naoto, Nishimoto, Satoshi, Nakamura, Masaaki
Rok vydání:	2020
Předmět:	Condensed Matter - Strongly Correlated Electrons
Druh dokumentu:	Working Paper
Popis:	We discuss exact plaquette-ordered ground states of the generalized Hubbard model based on the projection operator method for several corner sharing lattices: Kagome, checkerboard, and pyrochlore lattices. The obtained exact ground states are interpreted as N\'eel ordered states on the plaquette-located electrons. We demonstrate that these models also have exact edge states. We also calculate the entanglement entropy exactly in these systems. Comment: 12 pages and 6 figures. arXiv admin note: text overlap with arXiv:1803.01635
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2008.11599 Zobrazit plný text záznamu View this record from Arxiv