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journal article·2022-04-12Open access

Bogoliubov Fermi surfaces from pairing of emergent j=32 fermions on the pyrochlore lattice

Shingo Kobayashi, Ankita Bhattacharya, Carsten Timm, P. M. R. Brydon

Physical Review B· Volume 105· Issue 13
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Source abstract

Abstract

We examine the appearance of superconductivity in the strong-coupling limit of the Hubbard model on the pyrochlore lattice. We focus upon the limit of half-filling, where the normal-state band structure realizes a $j=\frac{3}{2}$ semimetal. Introducing doping, we show that the pairing is favored in a $J=2$ quintet ${E}g$ state. The attractive interaction in this channel relies on the fact that ${E}g$ pairing on the pyrochlore lattice avoids the detrimental onsite repulsion. Our calculations show that a time-reversal symmetry-breaking superconducting phase is favored, which displays Bogoliubov Fermi surfaces.
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Research context

OpenAlex topics: Advanced Condensed Matter Physics · Topological Materials and Phenomena · Physics of Superconductivity and Magnetism

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

RIKEN Center for Emergent Matter Science, Wako, Saitama 351-0198, Japan

Institute of Theoretical Physics, Technische Universität Dresden, 01062 Dresden, Germany

Würzburg-Dresden Cluster of Excellence ct.qmat, Technische Universität Dresden, 01062 Dresden, Germany

Department of Physics and MacDiarmid Institute, University of Otago, PO Box 56, Dunedin 9054, New Zealand

Funding

Japan Society for the Promotion of Science · Core Research for Evolutional Science and Technology · Japan Science and Technology Agency · Deutsche Forschungsgemeinschaft · Nagoya University · Marsden Fund

References (30)

Show source-provided references
1. 10.1038/nphys160610.1038/nphys1606 ↗
2. 10.1103/PhysRevB.83.20510110.1103/PhysRevB.83.205101 ↗
3. 10.1103/PhysRevB.85.04512410.1103/PhysRevB.85.045124 ↗
4. 10.1103/PhysRevB.87.15510110.1103/PhysRevB.87.155101 ↗
5. 10.1103/PhysRevB.87.21441610.1103/PhysRevB.87.214416 ↗
6. 10.1103/PhysRevX.4.04102710.1103/PhysRevX.4.041027 ↗
7. 10.1103/PhysRevB.91.16510510.1103/PhysRevB.91.165105 ↗
8. 10.1103/PhysRevB.95.08512010.1103/PhysRevB.95.085120 ↗
9. 10.1103/PhysRevLett.118.17720110.1103/PhysRevLett.118.177201 ↗
10. 10.1088/1367-2630/aab88110.1088/1367-2630/aab881 ↗
11. 10.1146/annurev-conmatphys-020911-12513810.1146/annurev-conmatphys-020911-125138 ↗
12. 10.1038/ncomms1004210.1038/ncomms10042 ↗
13. 10.1103/PhysRevLett.117.05640310.1103/PhysRevLett.117.056403 ↗
14. 10.1103/PhysRevB.95.07514910.1103/PhysRevB.95.075149 ↗
15. 10.1103/PhysRevLett.116.17700110.1103/PhysRevLett.116.177001 ↗
16. 10.1103/PhysRevLett.118.12700110.1103/PhysRevLett.118.127001 ↗
17. 10.1103/PhysRevB.98.22450910.1103/PhysRevB.98.224509 ↗
18. 10.1103/PhysRevB.104.09452910.1103/PhysRevB.104.094529 ↗
19. 10.7566/JPSJ.90.10470810.7566/JPSJ.90.104708 ↗
20. 10.1103/PhysRevResearch.3.03325510.1103/PhysRevResearch.3.033255 ↗
21. 10.1103/PhysRevX.8.01102910.1103/PhysRevX.8.011029 ↗
22. 10.1103/PhysRevB.99.05450510.1103/PhysRevB.99.054505 ↗
23. 10.1103/PhysRevResearch.2.01323010.1103/PhysRevResearch.2.013230 ↗
24. 10.1103/PhysRevB.103.16513910.1103/PhysRevB.103.165139 ↗
25. 10.1103/PhysRevLett.120.05700210.1103/PhysRevLett.120.057002 ↗
26. 10.1038/s41535-020-0246-010.1038/s41535-020-0246-0 ↗
27. 10.1103/PhysRevB.93.20513810.1103/PhysRevB.93.205138 ↗
28. 10.1073/pnas.152306411310.1073/pnas.1523064113 ↗
29. 10.1103/RevModPhys.63.23910.1103/RevModPhys.63.239 ↗
30. 10.1103/PhysRevB.102.19513410.1103/PhysRevB.102.195134 ↗