ARPES Study on the Electronic Structure and Superconducting Gap of Reentrant C4 Phase in (Sr,Na)Fe2As2

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APS March Meeting 2018

Volume 63, Number 1

Monday–Friday, March 5–9, 2018; Los Angeles, California

Session K14: Fe-based Superconductors -- ARPES and STM

8:00 AM–11:00 AM, Wednesday, March 7, 2018
LACC Room: 304B

Sponsoring Unit: DMP
Chair: Jhinhwan Lee, Korea Advanced Institute of Science and Technology

Abstract ID: BAPS.2018.MAR.K14.2

Abstract: K14.00002 : ARPES Study on the Electronic Structure and Superconducting Gap of Reentrant C₄ Phase in (Sr_,Na)Fe₂As₂

8:36 AM–8:48 AM

Abstract

Presenter:

Jianwei Huang
(Institute of Physics, Chinese Academy of Sciences)

Authors:

Jianwei Huang
(Institute of Physics, Chinese Academy of Sciences)

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

Run Yang
(Institute of Physics, Chinese Academy of Sciences)

Cong Li
(Institute of Physics, Chinese Academy of Sciences)

Yongqing Cai
(Institute of Physics, Chinese Academy of Sciences)

Qiang Gao
(Institute of Physics, Chinese Academy of Sciences)

Guodong Liu
(Institute of Physics, Chinese Academy of Sciences)

Chuangtian Chen
(Technical Institute of Physics and Chemistry, Chinese Academy of Sciences)

Zuyan Xu
(Technical Institute of Physics and Chemistry, Chinese Academy of Sciences)

Xianggang Qiu
(Institute of Physics, Chinese Academy of Sciences)

Xingjiang Zhou
(Institute of Physics, Chinese Academy of Sciences)

The relationship between magnetism, nematicity and superconductivity is important in understanding the superconductivity mechanism of the iron-based superconductors. Recently, reentrant C₄ tetragonal magnetic phase has been identified as a universal behavior within a narrow doping range in the hole-doped 122 iron-based superconductors in the nematic phase. Here we report high resolution laser-based angle-resolved photoemission (ARPES) measurements on the (Sr_,Na)Fe₂As₂ superconductors which exhibits reentrant C₄ magnetic phase. We measured the electronic structure distortion caused by the reentrant C₄ magnetic phase and the superconducting gap structure. Our results provide new insight in understanding the reentrant C₄ magnetic phase and superconductivity in the iron-based superconductors.

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.MAR.K14.2

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Bulletin of the American Physical Society

APS March Meeting 2018

Volume 63, Number 1

Monday–Friday, March 5–9, 2018; Los Angeles, California

Session K14: Fe-based Superconductors -- ARPES and STM

Abstract: K14.00002 : ARPES Study on the Electronic Structure and Superconducting Gap of Reentrant C4 Phase in (Sr,Na)Fe2As2

Presenter:

Authors:

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Abstract: K14.00002 : ARPES Study on the Electronic Structure and Superconducting Gap of Reentrant C₄ Phase in (Sr_,Na)Fe₂As₂