Model-mapped random phase approximation to evaluate superconductivity in the fluctuation exchange approximation from first principles

Hirofumi Sakakibara and Takao Kotani
Phys. Rev. B 99, 195141 – Published 23 May 2019

Abstract

We have applied the model-mapped random phase approximation (RPA) [H. Sakakibara et al., J. Phys. Soc. Jpn. 86, 044714 (2017)] to the cuprate superconductors La2CuO4 and HgBa2CuO4, resulting in two-orbital Hubbard models. All the model parameters are determined based on first-principles calculations. For the model Hamiltonians, we perform fluctuation exchange calculation. Results explain relative height of Tc observed in experiment for La2CuO4 and HgBa2CuO4. In addition, we give some analyses for the interaction terms in the model, especially comparisons with those of the constrained RPA.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 10 December 2018
  • Revised 12 March 2019

DOI:https://doi.org/10.1103/PhysRevB.99.195141

©2019 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Hirofumi Sakakibara1,2,* and Takao Kotani1

  • 1Department of Applied Mathematics and Physics, Tottori University, Tottori 680-8552, Japan
  • 2Computational Condensed Matter Physics Laboratory, RIKEN, Wako, Saitama 351-0198, Japan

  • *sakakibara.tottori.u@gmail.com

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 99, Iss. 19 — 15 May 2019

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×