Distinct behavior of electronic structure under uniaxial strain in BaFe2As2

Jiajun Li; Giao Ngoc Phan; Xingyu Wang; Fazhi Yang; Quanxin Hu; Ke Jia; Jin Zhao; Wenyao Liu; Renjie Zhang; Youguo Shi; Shiliang Li; Tian Qian; Hong Ding

doi:10.1088/1674-1056/acd8af

Distinct behavior of electronic structure under uniaxial strain in BaFe₂As₂

Jiajun Li
, Giao Ngoc Phan
, Xingyu Wang
, Fazhi Yang
, Quanxin Hu
, Ke Jia
, Jin Zhao
, Wenyao Liu
, Renjie Zhang
, Youguo Shi
, Shiliang Li
, Tian Qian
, Hong Ding

Quantum Heterostructures

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

We report a study of the electronic structure of BaFe₂As₂ under uniaxial strains using angle-resolved photoemission spectroscopy and transport measurements. Two electron bands at the M_Y point, with an energy splitting of 50 meV in the strain-free sample, shift downward and merge into each other under a large uniaxial strain, while three hole bands at the Γ point shift downward together. However, we also observed an enhancement of the resistance anisotropy under uniaxial strains by electrical transport measurements, implying that the applied strains strengthen the electronic nematic order in BaFe₂As₂.

Original language	English
Article number	017401
Journal	Chinese Physics B
Volume	33
Issue number	1
DOIs	https://doi.org/10.1088/1674-1056/acd8af
State	Published - Dec 1 2023

Funding

Project supported by the National Natural Science Foundation of China (Grant Nos. 11888101 and U1832202), the Chinese Academy of Sciences (Grant Nos. QYZDB-SSW- SLH043, XDB28000000, and XDB33000000), the K. C. Wong Education Foundation (Grant No. GJTD-2018-01), and the Informatization Plan of Chinese Academy of Sciences (Grant No. CAS-WX2021SF-0102).

Keywords

angle-resolved photoelectron spectroscopy
iron-based superconductor
symmetry breaking
uniaxial strain

Access to Document

10.1088/1674-1056/acd8af

Cite this

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title = "Distinct behavior of electronic structure under uniaxial strain in BaFe2As2",

abstract = "We report a study of the electronic structure of BaFe2As2 under uniaxial strains using angle-resolved photoemission spectroscopy and transport measurements. Two electron bands at the MY point, with an energy splitting of 50 meV in the strain-free sample, shift downward and merge into each other under a large uniaxial strain, while three hole bands at the Γ point shift downward together. However, we also observed an enhancement of the resistance anisotropy under uniaxial strains by electrical transport measurements, implying that the applied strains strengthen the electronic nematic order in BaFe2As2.",

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T1 - Distinct behavior of electronic structure under uniaxial strain in BaFe2As2

AU - Li, Jiajun

AU - Phan, Giao Ngoc

AU - Wang, Xingyu

AU - Yang, Fazhi

AU - Hu, Quanxin

AU - Jia, Ke

AU - Zhao, Jin

AU - Liu, Wenyao

AU - Zhang, Renjie

AU - Shi, Youguo

AU - Li, Shiliang

AU - Qian, Tian

AU - Ding, Hong

PY - 2023/12/1

Y1 - 2023/12/1

N2 - We report a study of the electronic structure of BaFe2As2 under uniaxial strains using angle-resolved photoemission spectroscopy and transport measurements. Two electron bands at the MY point, with an energy splitting of 50 meV in the strain-free sample, shift downward and merge into each other under a large uniaxial strain, while three hole bands at the Γ point shift downward together. However, we also observed an enhancement of the resistance anisotropy under uniaxial strains by electrical transport measurements, implying that the applied strains strengthen the electronic nematic order in BaFe2As2.

AB - We report a study of the electronic structure of BaFe2As2 under uniaxial strains using angle-resolved photoemission spectroscopy and transport measurements. Two electron bands at the MY point, with an energy splitting of 50 meV in the strain-free sample, shift downward and merge into each other under a large uniaxial strain, while three hole bands at the Γ point shift downward together. However, we also observed an enhancement of the resistance anisotropy under uniaxial strains by electrical transport measurements, implying that the applied strains strengthen the electronic nematic order in BaFe2As2.

KW - angle-resolved photoelectron spectroscopy

KW - iron-based superconductor

KW - symmetry breaking

KW - uniaxial strain

UR - https://www.scopus.com/pages/publications/85182271715

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DO - 10.1088/1674-1056/acd8af

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