Common (π,π) Band Folding and Surface Reconstruction in FeAs-Based Superconductors
High resolution angle-resolved photoemission spectroscopy (ARPES) measurements are carried out on CaKFe 4 As 4 , KCa 2 Fe 4 As 4 F 2 and (Ba 0.6 K 0.4 )Fe 2 As 2 superconductors. Clear evidence of band folding between the Brillouin zone center and corners with a ( π , π ) wave vector has been found...
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| Veröffentlicht in: | Chinese physics letters 2021-06, Vol.38 (5), p.57404-143 |
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| creator | Cai, Yongqing Xie, Tao Yang, Huan Wu, Dingsong Huang, Jianwei Hong, Wenshan Cao, Lu Liu, Chang Li, Cong Xu, Yu Gao, Qiang Miao, Taimin Liu, Guodong Li, Shiliang Huang, Li Luo, Huiqian Xu, Zuyan Gao, Hongjun Zhao, Lin Zhou, X. J. |
| description | High resolution angle-resolved photoemission spectroscopy (ARPES) measurements are carried out on CaKFe
4
As
4
, KCa
2
Fe
4
As
4
F
2
and (Ba
0.6
K
0.4
)Fe
2
As
2
superconductors. Clear evidence of band folding between the Brillouin zone center and corners with a (
π
,
π
) wave vector has been found from the measured Fermi surface and band structures in all the three kinds of superconductors. A dominant
2
×
2
surface reconstruction is observed on the cleaved surface of CaKFe
4
As
4
by scanning tunneling microscopy (STM) measurements. We propose that the commonly observed
2
×
2
reconstruction in the FeAs-based superconductors provides a general scenario to understand the origin of the (
π
,
π
) band folding. Our observations provide new insights in understanding the electronic structure and superconductivity mechanism in iron-based superconductors. |
| doi_str_mv | 10.1088/0256-307X/38/5/057404 |
| format | Article |
| fullrecord | <record><control><sourceid>wanfang_jour_cross</sourceid><recordid>TN_cdi_wanfang_journals_zgwlkb_e202105024</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><wanfj_id>zgwlkb_e202105024</wanfj_id><sourcerecordid>zgwlkb_e202105024</sourcerecordid><originalsourceid>FETCH-LOGICAL-c353t-2c94b534590d60e460bced9841c791210a88d32e0380c0a1a76eb731e4e87c6e3</originalsourceid><addsrcrecordid>eNo9kNFKwzAUhoMoOKePIPTSgbUnTdKml9uwKgwEneBdSNPT0bklI9kYerU33CvZMvHq_PB__Ac-Qm4pPFCQMoFUZDGD_DNhMhEJiJwDPyMDmnMaM8HhnAz-mUtyFcISgFJJ6YDMp269dja6Ox7uj4dRNNG2jkq3qlu7iPr8vvONNhi9oXE2bP3ObNuOb21U4jjEEx2whzbou77uWufDNblo9Crgzd8dko_ycT59jmevTy_T8Sw2TLBtnJqCV4JxUUCdAfIMKoN1ITk1eUFTClrKmqUITIIBTXWeYZUzihxlbjJkQzI67e61bbRdqKXbedt9VD-L_eqrUphCNyMg5R0rTqzxLgSPjdr4dq39t6Kgeo2qV6R6RYpJJdRJI_sFpD5llw</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Common (π,π) Band Folding and Surface Reconstruction in FeAs-Based Superconductors</title><source>IOP Publishing Journals</source><source>Institute of Physics (IOP) Journals - HEAL-Link</source><source>Alma/SFX Local Collection</source><creator>Cai, Yongqing ; Xie, Tao ; Yang, Huan ; Wu, Dingsong ; Huang, Jianwei ; Hong, Wenshan ; Cao, Lu ; Liu, Chang ; Li, Cong ; Xu, Yu ; Gao, Qiang ; Miao, Taimin ; Liu, Guodong ; Li, Shiliang ; Huang, Li ; Luo, Huiqian ; Xu, Zuyan ; Gao, Hongjun ; Zhao, Lin ; Zhou, X. J.</creator><creatorcontrib>Cai, Yongqing ; Xie, Tao ; Yang, Huan ; Wu, Dingsong ; Huang, Jianwei ; Hong, Wenshan ; Cao, Lu ; Liu, Chang ; Li, Cong ; Xu, Yu ; Gao, Qiang ; Miao, Taimin ; Liu, Guodong ; Li, Shiliang ; Huang, Li ; Luo, Huiqian ; Xu, Zuyan ; Gao, Hongjun ; Zhao, Lin ; Zhou, X. J.</creatorcontrib><description>High resolution angle-resolved photoemission spectroscopy (ARPES) measurements are carried out on CaKFe
4
As
4
, KCa
2
Fe
4
As
4
F
2
and (Ba
0.6
K
0.4
)Fe
2
As
2
superconductors. Clear evidence of band folding between the Brillouin zone center and corners with a (
π
,
π
) wave vector has been found from the measured Fermi surface and band structures in all the three kinds of superconductors. A dominant
2
×
2
surface reconstruction is observed on the cleaved surface of CaKFe
4
As
4
by scanning tunneling microscopy (STM) measurements. We propose that the commonly observed
2
×
2
reconstruction in the FeAs-based superconductors provides a general scenario to understand the origin of the (
π
,
π
) band folding. Our observations provide new insights in understanding the electronic structure and superconductivity mechanism in iron-based superconductors.</description><identifier>ISSN: 0256-307X</identifier><identifier>EISSN: 1741-3540</identifier><identifier>DOI: 10.1088/0256-307X/38/5/057404</identifier><language>eng</language><publisher>Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China</publisher><ispartof>Chinese physics letters, 2021-06, Vol.38 (5), p.57404-143</ispartof><rights>Copyright © Wanfang Data Co. Ltd. All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c353t-2c94b534590d60e460bced9841c791210a88d32e0380c0a1a76eb731e4e87c6e3</citedby><cites>FETCH-LOGICAL-c353t-2c94b534590d60e460bced9841c791210a88d32e0380c0a1a76eb731e4e87c6e3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttp://www.wanfangdata.com.cn/images/PeriodicalImages/zgwlkb-e/zgwlkb-e.jpg</thumbnail><link.rule.ids>314,780,784,27923,27924</link.rule.ids></links><search><creatorcontrib>Cai, Yongqing</creatorcontrib><creatorcontrib>Xie, Tao</creatorcontrib><creatorcontrib>Yang, Huan</creatorcontrib><creatorcontrib>Wu, Dingsong</creatorcontrib><creatorcontrib>Huang, Jianwei</creatorcontrib><creatorcontrib>Hong, Wenshan</creatorcontrib><creatorcontrib>Cao, Lu</creatorcontrib><creatorcontrib>Liu, Chang</creatorcontrib><creatorcontrib>Li, Cong</creatorcontrib><creatorcontrib>Xu, Yu</creatorcontrib><creatorcontrib>Gao, Qiang</creatorcontrib><creatorcontrib>Miao, Taimin</creatorcontrib><creatorcontrib>Liu, Guodong</creatorcontrib><creatorcontrib>Li, Shiliang</creatorcontrib><creatorcontrib>Huang, Li</creatorcontrib><creatorcontrib>Luo, Huiqian</creatorcontrib><creatorcontrib>Xu, Zuyan</creatorcontrib><creatorcontrib>Gao, Hongjun</creatorcontrib><creatorcontrib>Zhao, Lin</creatorcontrib><creatorcontrib>Zhou, X. J.</creatorcontrib><title>Common (π,π) Band Folding and Surface Reconstruction in FeAs-Based Superconductors</title><title>Chinese physics letters</title><description>High resolution angle-resolved photoemission spectroscopy (ARPES) measurements are carried out on CaKFe
4
As
4
, KCa
2
Fe
4
As
4
F
2
and (Ba
0.6
K
0.4
)Fe
2
As
2
superconductors. Clear evidence of band folding between the Brillouin zone center and corners with a (
π
,
π
) wave vector has been found from the measured Fermi surface and band structures in all the three kinds of superconductors. A dominant
2
×
2
surface reconstruction is observed on the cleaved surface of CaKFe
4
As
4
by scanning tunneling microscopy (STM) measurements. We propose that the commonly observed
2
×
2
reconstruction in the FeAs-based superconductors provides a general scenario to understand the origin of the (
π
,
π
) band folding. Our observations provide new insights in understanding the electronic structure and superconductivity mechanism in iron-based superconductors.</description><issn>0256-307X</issn><issn>1741-3540</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNo9kNFKwzAUhoMoOKePIPTSgbUnTdKml9uwKgwEneBdSNPT0bklI9kYerU33CvZMvHq_PB__Ac-Qm4pPFCQMoFUZDGD_DNhMhEJiJwDPyMDmnMaM8HhnAz-mUtyFcISgFJJ6YDMp269dja6Ox7uj4dRNNG2jkq3qlu7iPr8vvONNhi9oXE2bP3ObNuOb21U4jjEEx2whzbou77uWufDNblo9Crgzd8dko_ycT59jmevTy_T8Sw2TLBtnJqCV4JxUUCdAfIMKoN1ITk1eUFTClrKmqUITIIBTXWeYZUzihxlbjJkQzI67e61bbRdqKXbedt9VD-L_eqrUphCNyMg5R0rTqzxLgSPjdr4dq39t6Kgeo2qV6R6RYpJJdRJI_sFpD5llw</recordid><startdate>20210601</startdate><enddate>20210601</enddate><creator>Cai, Yongqing</creator><creator>Xie, Tao</creator><creator>Yang, Huan</creator><creator>Wu, Dingsong</creator><creator>Huang, Jianwei</creator><creator>Hong, Wenshan</creator><creator>Cao, Lu</creator><creator>Liu, Chang</creator><creator>Li, Cong</creator><creator>Xu, Yu</creator><creator>Gao, Qiang</creator><creator>Miao, Taimin</creator><creator>Liu, Guodong</creator><creator>Li, Shiliang</creator><creator>Huang, Li</creator><creator>Luo, Huiqian</creator><creator>Xu, Zuyan</creator><creator>Gao, Hongjun</creator><creator>Zhao, Lin</creator><creator>Zhou, X. 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J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c353t-2c94b534590d60e460bced9841c791210a88d32e0380c0a1a76eb731e4e87c6e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Cai, Yongqing</creatorcontrib><creatorcontrib>Xie, Tao</creatorcontrib><creatorcontrib>Yang, Huan</creatorcontrib><creatorcontrib>Wu, Dingsong</creatorcontrib><creatorcontrib>Huang, Jianwei</creatorcontrib><creatorcontrib>Hong, Wenshan</creatorcontrib><creatorcontrib>Cao, Lu</creatorcontrib><creatorcontrib>Liu, Chang</creatorcontrib><creatorcontrib>Li, Cong</creatorcontrib><creatorcontrib>Xu, Yu</creatorcontrib><creatorcontrib>Gao, Qiang</creatorcontrib><creatorcontrib>Miao, Taimin</creatorcontrib><creatorcontrib>Liu, Guodong</creatorcontrib><creatorcontrib>Li, Shiliang</creatorcontrib><creatorcontrib>Huang, Li</creatorcontrib><creatorcontrib>Luo, Huiqian</creatorcontrib><creatorcontrib>Xu, Zuyan</creatorcontrib><creatorcontrib>Gao, Hongjun</creatorcontrib><creatorcontrib>Zhao, Lin</creatorcontrib><creatorcontrib>Zhou, X. J.</creatorcontrib><collection>CrossRef</collection><collection>Wanfang Data Journals - Hong Kong</collection><collection>WANFANG Data Centre</collection><collection>Wanfang Data Journals</collection><collection>万方数据期刊 - 香港版</collection><collection>China Online Journals (COJ)</collection><collection>China Online Journals (COJ)</collection><jtitle>Chinese physics letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Cai, Yongqing</au><au>Xie, Tao</au><au>Yang, Huan</au><au>Wu, Dingsong</au><au>Huang, Jianwei</au><au>Hong, Wenshan</au><au>Cao, Lu</au><au>Liu, Chang</au><au>Li, Cong</au><au>Xu, Yu</au><au>Gao, Qiang</au><au>Miao, Taimin</au><au>Liu, Guodong</au><au>Li, Shiliang</au><au>Huang, Li</au><au>Luo, Huiqian</au><au>Xu, Zuyan</au><au>Gao, Hongjun</au><au>Zhao, Lin</au><au>Zhou, X. J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Common (π,π) Band Folding and Surface Reconstruction in FeAs-Based Superconductors</atitle><jtitle>Chinese physics letters</jtitle><date>2021-06-01</date><risdate>2021</risdate><volume>38</volume><issue>5</issue><spage>57404</spage><epage>143</epage><pages>57404-143</pages><issn>0256-307X</issn><eissn>1741-3540</eissn><abstract>High resolution angle-resolved photoemission spectroscopy (ARPES) measurements are carried out on CaKFe
4
As
4
, KCa
2
Fe
4
As
4
F
2
and (Ba
0.6
K
0.4
)Fe
2
As
2
superconductors. Clear evidence of band folding between the Brillouin zone center and corners with a (
π
,
π
) wave vector has been found from the measured Fermi surface and band structures in all the three kinds of superconductors. A dominant
2
×
2
surface reconstruction is observed on the cleaved surface of CaKFe
4
As
4
by scanning tunneling microscopy (STM) measurements. We propose that the commonly observed
2
×
2
reconstruction in the FeAs-based superconductors provides a general scenario to understand the origin of the (
π
,
π
) band folding. Our observations provide new insights in understanding the electronic structure and superconductivity mechanism in iron-based superconductors.</abstract><pub>Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China</pub><doi>10.1088/0256-307X/38/5/057404</doi><tpages>6</tpages></addata></record> |
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| ispartof | Chinese physics letters, 2021-06, Vol.38 (5), p.57404-143 |
| issn | 0256-307X 1741-3540 |
| language | eng |
| recordid | cdi_wanfang_journals_zgwlkb_e202105024 |
| source | IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link; Alma/SFX Local Collection |
| title | Common (π,π) Band Folding and Surface Reconstruction in FeAs-Based Superconductors |
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