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

• Sakakibara, Hirofumi

• Kotani, Takao

抄録

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.

収録刊行物

• Physical review. Third series. B, Condensed matter and materials physics

  Physical review. Third series. B, Condensed matter and materials physics 99 195141-, 2019-05-23

  American Physical Society

詳細情報

• CRID: 1050296829527035776
• NII論文ID: 120006724715
• NII書誌ID: AA11187113
• ISSN: 24699950
• ISSN: 24699969
• DOI: 10.1103/physrevb.99.195141
• Web Site: https://repository.lib.tottori-u.ac.jp/records/7330
• Web Site: https://link.aps.org/article/10.1103/PhysRevB.99.195141
• Web Site: http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevB.99.195141/fulltext
• 本文言語コード: en
• 資料種別: journal article
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