Effects of temperature and magnetization on the Mott-Anderson physics in one-dimensional disordered systems

Author(s)

Canella, G. A. ; Zawadzki, K. ; Franca, V. V.

• Document type: Journal article
• Source: SCIENTIFIC REPORTS; v. 12, n. 1, p. 6-pg., 2022-05-24.

Abstract

We investigate the Mott-Anderson physics in interacting disordered one-dimensional chains through the average single-site entanglement quantified by the linear entropy, which is obtained via density-functional theory calculations. We show that the minimum disorder strength required to the so-called full Anderson localization-characterized by the real-space localization of pairs-is strongly dependent on the interaction regime. The degree of localization is found to be intrinsically related to the interplay between the correlations and the disorder potential. In magnetized systems, the minimum entanglement characteristic of the full Anderson localization is split into two, one for each of the spin species. We show that although all types of localization eventually disappear with increasing temperature, the full Anderson localization persists for higher temperatures than the Mott-like localization. (AU)

• FAPESP's process: 19/15560-8 - Superfluidity, entanglement and quantum phase transitions in nanomaterials via density functional theory and metric spaces approaches
• Grantee: Vivian Vanessa França Henn
• Support Opportunities: Regular Research Grants
• FAPESP's process: 16/01343-7 - ICTP South American Institute for Fundamental Research: a regional center for theoretical physics
• Grantee: Nathan Jacob Berkovits
• Support Opportunities: Special Projects
• FAPESP's process: 20/13115-4 - Correlations in many-body systems from the perspective of DFT, QIT and RG
• Grantee: Krissia de Zawadzki
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 21/06744-8 - Quantum phase transitions in nanomaterials: developing of density functionals and their applications via DFT
• Grantee: Vivian Vanessa França Henn
• Support Opportunities: Research Grants - Young Investigators Grants - Phase 2