DC Field | Value | Language |
---|---|---|
dc.contributor.author | BANG, YUNKYU | - |
dc.date.accessioned | 2019-04-08T06:37:45Z | - |
dc.date.available | 2019-04-08T06:37:45Z | - |
dc.date.created | 2019-03-15 | - |
dc.date.issued | 2018-08-21 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/97785 | - |
dc.description.abstract | There are a group of FeSe systems: FeSe/SrTiO3 monolayer system (Tc~60-100K) and other heavily electron-doped iron selenide (HEDIS) compounds such as AxFe2-ySe2 (A=K, Rb, Cs, Tl, etc.) (Tc~30-40K), (Li1-xFexOH)FeSe (Tc~40K), etc. These systems have all very high Tc (30K -100K) despite having only the electron Fermi surfaces (FSs) but no hole FS. Here we propose a unifying pairing mechanism [1] based on a new concept: dynamical tuning of pairing cutoff energy. With this mechanism, I show how the incipient band without a Fermi surface can participate pairing interaction through RG process and the system forms the s++-wave state only with the electron pockets. In this way, the HEDIS system can achieve the maximum Tc, stored in the system, and yet avoid the detrimental impurity pair-breaking scattering. Our theory not only provides a unifying pairing mechanism for all HEDIS system, but also naturally explains the puzzling double dome structure of the phase diagram of Tc versus tuning parameter (doping, pressure, etc) [2, 3]. | - |
dc.language | English | - |
dc.publisher | National Lab for Superconductivity, Institute of Physics, Chinese Academy of Sciences | - |
dc.relation.isPartOf | The 12th International Conference on Materials and Mechanisms of Superconductivity and High Temperature Superconductors (M2S-2018) | - |
dc.relation.isPartOf | M2S-2018 Conference Abstract Book | - |
dc.title | Pairing Mechanism of the FeSe-monolayer and related Systems: Dynamical Tuning of Pairing Cutoff Energy | - |
dc.type | Conference | - |
dc.type.rims | CONF | - |
dc.identifier.bibliographicCitation | The 12th International Conference on Materials and Mechanisms of Superconductivity and High Temperature Superconductors (M2S-2018), pp.89 | - |
dc.citation.conferenceDate | 2018-08-19 | - |
dc.citation.conferencePlace | CC | - |
dc.citation.conferencePlace | Beijing | - |
dc.citation.startPage | 89 | - |
dc.citation.title | The 12th International Conference on Materials and Mechanisms of Superconductivity and High Temperature Superconductors (M2S-2018) | - |
dc.contributor.affiliatedAuthor | BANG, YUNKYU | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
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