The recent discovery of materials featuring strong Rashba spin-orbit coupling (RSOC) and strong electronic correlation raises questions about the interplay of Mott and Rashba physics. In this work, we employ cluster perturbation theory to investigate the spectral properties of the two-dimensional Hubbard model in the presence of a significant or large RSOC. We show that RSOC strongly favors metallic phases and competes with Mott localization, leading to an unconventional scenario for the Mott transition, which is no longer controlled by the ratio between the Hubbard U and an effective bandwidth. The results show a strong sensitivity to the value of the RSOC.

Rashba-metal to Mott-insulator transition / Brosco, V.; Capone, M.. - In: PHYSICAL REVIEW. B. - ISSN 2469-9950. - 101:23(2020), pp. 1-11. [10.1103/PhysRevB.101.235149]

Rashba-metal to Mott-insulator transition

Capone, M.
2020-01-01

Abstract

The recent discovery of materials featuring strong Rashba spin-orbit coupling (RSOC) and strong electronic correlation raises questions about the interplay of Mott and Rashba physics. In this work, we employ cluster perturbation theory to investigate the spectral properties of the two-dimensional Hubbard model in the presence of a significant or large RSOC. We show that RSOC strongly favors metallic phases and competes with Mott localization, leading to an unconventional scenario for the Mott transition, which is no longer controlled by the ratio between the Hubbard U and an effective bandwidth. The results show a strong sensitivity to the value of the RSOC.
2020
101
23
1
11
235149
10.1103/PhysRevB.101.235149
https://journals.aps.org/prb/abstract/10.1103/PhysRevB.101.235149
https://arxiv.org/abs/1811.12034
Brosco, V.; Capone, M.
File in questo prodotto:
File Dimensione Formato  
1811.12034 (1).pdf

accesso aperto

Descrizione: preprint
Tipologia: Documento in Pre-print
Licenza: Non specificato
Dimensione 1.75 MB
Formato Adobe PDF
1.75 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/126773
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 7
  • ???jsp.display-item.citation.isi??? 8
social impact