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Suppression of superconductivity by spin fluctuations in iron-based superconductors
| Title: | Suppression of superconductivity by spin fluctuations in iron-based superconductors |
| Authors: | Yamase, Hiroyuki Browse this author | | Agatsuma, Tomoaki Browse this author |
| Issue Date: | 27-Aug-2020 |
| Publisher: | American Physical Society (APS) |
| Journal Title: | Physical Review B |
| Volume: | 102 |
| Issue: | 6 |
| Start Page: | 060504 |
| Publisher DOI: | 10.1103/PhysRevB.102.060504 |
| Abstract: | We study the superconducting instability mediated by spin fluctuations in the Eliashberg theory for a minimal two-band model of iron-based superconductors. While antiferromagnetic spin fluctuations can drive superconductivity (SC) as is well established, we find that spin fluctuations necessarily contain a contribution to suppress SC even though SC can eventually occur at lower temperatures. This self-restraint effect stems from a general feature of the spin-fluctuation mechanism, namely, the repulsive pairing interaction, which leads to phase frustration of the pairing gap and consequently the suppression of SC. |
| Rights: | ©2020 American Physical Society |
| Type: | article |
| URI: | http://hdl.handle.net/2115/79525 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 山瀬 博之
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