Correlation of Fe-Based Superconductivity and Electron-Phonon Coupling in an FeAs/Oxide Heterostructure
| العنوان: | Correlation of Fe-Based Superconductivity and Electron-Phonon Coupling in an FeAs/Oxide Heterostructure |
|---|---|
| المؤلفون: | Seokhwan, Choi, Steven, Johnston, Won-Jun, Jang, Klaus, Koepernik, Ken, Nakatsukasa, Jong Mok, Ok, Hyun-Jung, Lee, Hyun Woo, Choi, Alex Taekyung, Lee, Alireza, Akbari, Yannis K, Semertzidis, Yunkyu, Bang, Jun Sung, Kim, Jhinhwan, Lee |
| المصدر: | Physical review letters. 119(10) |
| سنة النشر: | 2017 |
| الوصف: | Interfacial phonons between iron-based superconductors (FeSCs) and perovskite substrates have received considerable attention due to the possibility of enhancing preexisting superconductivity. Using scanning tunneling spectroscopy, we studied the correlation between superconductivity and e-ph interaction with interfacial phonons in an iron-based superconductor Sr_{2}VO_{3}FeAs (T_{c}≈33 K) made of alternating FeSC and oxide layers. The quasiparticle interference measurement over regions with systematically different average superconducting gaps due to the e-ph coupling locally modulated by O vacancies in the VO_{2} layer, and supporting self-consistent momentum-dependent Eliashberg calculations provide a unique real-space evidence of the forward-scattering interfacial phonon contribution to the total superconducting pairing. |
| تدمد: | 1079-7114 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=pmid________::b3d05aa7c04e7477ee203fadea87c929 https://pubmed.ncbi.nlm.nih.gov/28949163 |
| رقم الانضمام: | edsair.pmid..........b3d05aa7c04e7477ee203fadea87c929 |
| قاعدة البيانات: | OpenAIRE |
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