Bulletin of the American Physical Society
APS March Meeting 2019
Volume 64, Number 2
Monday–Friday, March 4–8, 2019; Boston, Massachusetts
Session K10: Fe-based Superconductors -- FeSe Intercalates and Interfaces
8:00 AM–11:00 AM,
Wednesday, March 6, 2019
BCEC
Room: 151B
Sponsoring
Units:
DMP DCOMP
Chair: Timur Kim
Abstract: K10.00006 : On the Tc enhancement mechanism at the FeSe/SrTiO3 interface*
9:24 AM–9:36 AM
Presenter:
Tianlun Yu
(Physics, Fudan University)
Authors:
Tianlun Yu
(Physics, Fudan University)
Qi Song
(Physics, Fudan University)
Xia Lou
(Physics, Fudan University)
Binping Xie
(Laboratory of Advanced Materials, Fudan University)
Hai chao Xu
(Physics, Fudan University)
Chenhaoping Wen
(Physics, Fudan University)
Qi Yao
(Physics, Fudan University)
Shuyuan Zhang
(Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences)
Xuetao Zhu
(Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences)
Jiandong Guo
(Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences)
Rui Peng
(Physics, Fudan University)
Donglai Feng
(Physics, Fudan University)
To reveal the mechanism, by combining advances in high quality interface growth, 16O-18O isotope substitution, and extensive data from angle resolved photoemission spectroscopy, we provide striking evidence that the high Tc in FeSe/STO is the cooperative effect of the intrinsic pairing mechanism in the FeSe and interactions between the FeSe electrons and STO phonons.
Furthermore, our results point to the promising prospect that similar cooperation between different Cooper pairing channels may be a general framework to understand and design HTSCs.
*The National Key R&D Program of the MOST of China (Grant Nos. 2016YFA0300200, 2017YFA0303004);
The National Science Foundation of China (Grant Nos. 11704073, 11504342).
Discussions with:
Profs. Dragan Mihailovic, Hugo Keller, Annette Bussmann-Holder, Frederick Walker, and Victor E. Henrich on the isotope effects;
Guangming Zhang, Qianghua Wang, and Steve Johnston on EPI.
Dr. Darren Peets for help with the editing.
Dr. Qiuyun Chen for help with the SIMS measurements.
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