Interface-enhanced superconductivity of single layer FeSe grown on non-TiO<sub>2</sub> based oxides

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APS March Meeting 2021

Volume 66, Number 1

Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA

Session E41: Surface Studies of Two Dimensional Materials

8:00 AM–11:00 AM, Tuesday, March 16, 2021

Sponsoring Unit: DCMP
Chair: Hee Taek Yi, Rutgers, The State University of New Jersey

Abstract: E41.00009 : Interface-enhanced superconductivity of single layer FeSe grown on non-TiO₂ based oxides*

9:36 AM–9:48 AM Live

Abstract

Presenter:

Yuan-He Song
(State Key Laboratory of Surface Physics, Department of Physics, and Advanced Materials Laboratory, Fudan Univ)

Authors:

Yuan-He Song
(State Key Laboratory of Surface Physics, Department of Physics, and Advanced Materials Laboratory, Fudan Univ)

Xia Lou
(State Key Laboratory of Surface Physics, Department of Physics, and Advanced Materials Laboratory, Fudan Univ)

Xiaoyang Chen
(State Key Laboratory of Surface Physics, Department of Physics, and Advanced Materials Laboratory, Fudan Univ)

Qinghua Zhang
(Institute of Physics, Chinese Academy of Sciences)

Lin Gu
(Institute of Physics, Chinese Academy of Sciences)

Zheng Chen
(Department of Physics, Zhejiang Univ)

Yan-Wu Xie
(Department of Physics, Zhejiang Univ)

Xiaofeng Xu
(Institute of Physics, Chinese Academy of Sciences)

Xuetao Zhu
(Institute of Physics, Chinese Academy of Sciences)

Jiandong Guo
(Institute of Physics, Chinese Academy of Sciences)

Ran Tao
(State Key Laboratory of Surface Physics, Department of Physics, and Advanced Materials Laboratory, Fudan Univ)

Tianlun Yu
(State Key Laboratory of Surface Physics, Department of Physics, and Advanced Materials Laboratory, Fudan Univ)

Hao Ru
(State Key Laboratory of Surface Physics, Department of Physics, and Advanced Materials Laboratory, Fudan Univ)

Yi-Hua Wang
(State Key Laboratory of Surface Physics, Department of Physics, and Advanced Materials Laboratory, Fudan Univ)

Haichao Xu
(State Key Laboratory of Surface Physics, Department of Physics, and Advanced Materials Laboratory, Fudan Univ)

Rui Peng
(State Key Laboratory of Surface Physics, Department of Physics, and Advanced Materials Laboratory, Fudan Univ)

Donglai Feng
(State Key Laboratory of Surface Physics, Department of Physics, and Advanced Materials Laboratory, Fudan Univ)

The single layer FeSe film on SrTiO₃ indicates that interfaces can play a significant role in high-temperature superconductivity. Here we report a new FeSe-based interface, single layer FeSe grown on non-TiO₂ based oxides by molecular beam epitaxy (MBE) method, was successfully obtained. The structure of the interface was determined by high resolution transmission electron microscopy (HRTEM). The angle-resolved photoemission spectroscopy (ARPES) shows that it is superconducting with a large gap, while the ex-situ mutual inductance measurements indicate it has a high onset temperature for diamagnetism. This heterostructure can provide a new platform for understanding the interface-enhanced superconductivity.

*The National Natural Science Foundation of China

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Bulletin of the American Physical Society

APS March Meeting 2021

Volume 66, Number 1

Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA

Session E41: Surface Studies of Two Dimensional Materials

Abstract: E41.00009 : Interface-enhanced superconductivity of single layer FeSe grown on non-TiO2 based oxides*

Presenter:

Authors:

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Abstract: E41.00009 : Interface-enhanced superconductivity of single layer FeSe grown on non-TiO₂ based oxides*