DMFT study of the local correlation effects in quasi-periodic system. (18th March 2015)

• Record Type: Journal Article
• Authors: Takemori, Nayuta; Koga, Akihisa
• Is Part Of: Journal of physics. Number 592 (2015)
• Page Start: 012038
• Publication Date: 2015-03-18
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/592/1/012038
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: We study a two-dimensional Hubbard model on a Penrose lattice by means of the real-space dynamical mean-field theory. Calculating the renormalization factor and density of states at each site, we discuss local electron correlations on the quasi-periodic structure. It is found that the renormalized metallic state appears near the Mott transition in the Penrose lattice system. We also address a spatially-dependent renormalization characteristic of the quasi-periodic lattice.