Xun Jia

Shuyuan Zhang; Jiaqi Guan; Xun Jia; Bing Liu; Wei Hua Wang; F. Li; Lili Wang; Xucun Ma; Qi-Kun Xue; Jiandi Zhang; E. W. Plummer; X. W. Zhu; Jiandong Guo

The significant role of interfacial coupling in the enhancement of superconductivity in FeSe films on

X. W. Zhu; Yanwei Cao; Shuyuan Zhang; Xun Jia; Qinlin Guo; Fang Yang; Lin-Fan Zhu; Jiandi Zhang; E. W. Plummer; Jiandong Guo

{\mathrm{SrTiO}}_{3}

Shuyuan Zhang; Jiaqi Guan; Yan Wang; Tom Berlijn; Steve Johnston; Xun Jia; Bing Liu; Qing Zhu; Qichang An; Siwei Xue; Yanwei Cao; Fang Yang; Wei-Hua Wang; Jiandi Zhang; E. W. Plummer; X. W. Zhu; Jiandong Guo

has been widely recognized, but the explicit origin of this coupling is yet to be identified. Here, by surface phonon measurements using high-resolution electron energy loss spectroscopy, we found the electric field generated by Fuchs-Kliewer (F-K) phonon modes of

Xun Jia; Shuyuan Zhang; Raman Sankar; Fangcheng Chou; Wei-Hua Wang; K. Kempa; E. W. Plummer; Jiandi Zhang; X. W. Zhu; Jiandong Guo

{\mathrm{SrTiO}}_{3}

Jiaqi Guan; Xiaochun Huang; Xiaofeng Xu; Shuyuan Zhang; Xun Jia; X. W. Zhu; Weihua Wang; Jiandong Guo

can penetrate into FeSe films and strongly interact with the electrons therein. The mode-specific electron-phonon coupling constant for the

Xun Jia; X. W. Zhu; Jiandong Guo

\ensuremath{\sim}92

Jiaqi Guan; Xiaochun Huang; Shuyuan Zhang; Xun Jia; X. W. Zhu; Weihua Wang; Jiandong Guo

meV F-K phonon is

Xun Jia; Shuyuan Zhang; Raman Sankar; Fangcheng Chou; Wei-Hua Wang; K. Kempa; E. W. Plummer; Jiandi Zhang; X. W. Zhu; Jiandong Guo

\ensuremath{\sim}0.25

Shuyuan Zhang; Jiaqi Guan; Xun Jia; Bing Liu; Wei-Hua Wang; Jiandi Zhang; Ward Plummer; X. W. Zhu; Jiandong Guo

in single-layer FeSe on

X. W. Zhu; Xun Jia; Shuyuan Zhang; Raman Sankar; Fangcheng Chou; E. W. Plummer; Jiandi Zhang; Jiandong Guo

{\mathrm{SrTiO}}_{3}