Particle–hole fluctuations and possible superconductivity in dopedα-RuCl3

• 来源期刊: 中国物理B（英文版）
• 关键词: superconductivity particle–hole fl uctuations spin–orbit coupling α-RuCl3
• 年，卷（期）: 2019,（5）
• 页码范围: 327-333
• 页数: 7页
• 语种: 英文
• DOI: 10.1088/1674-1056/28/5/057402

摘要

We study various particle–hole excitations and possible superconducting pairings mediated by these fl uctuations in dopedα-RuCl3 by using multi-band Hubbard model with all t2g orbitals. By performing a random-phase-approximation (RPA) analysis, we find that among all particle–hole excitations, the jeff=1/2 pseudospin fl uctuations are dominant, sug-gesting the robustness of jeff=1/2 picture even in the doped systems. We also find that the most favorable superconducting state has a d-wave pairing symmetry.