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Experimental evidence for Zeeman spin–orbit coupling in layered antiferromagnetic conductors
Most of solid-state spin physics arising from spin–orbit coupling, from fundamental phenomena to industrial applications, relies on symmetry-protected degeneracies. So does the Zeeman spin–orbit coupling, expected to manifest itself in a wide range of antiferromagnetic conductors. Yet, experimental...
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| Published in: | npj quantum materials 2021-02, Vol.6 (1), p.1-7, Article 11 |
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| creator | Ramazashvili, R. Grigoriev, P. D. Helm, T. Kollmannsberger, F. Kunz, M. Biberacher, W. Kampert, E. Fujiwara, H. Erb, A. Wosnitza, J. Gross, R. Kartsovnik, M. V. |
| description | Most of solid-state spin physics arising from spin–orbit coupling, from fundamental phenomena to industrial applications, relies on symmetry-protected degeneracies. So does the Zeeman spin–orbit coupling, expected to manifest itself in a wide range of antiferromagnetic conductors. Yet, experimental proof of this phenomenon has been lacking. Here we demonstrate that the Néel state of the layered organic superconductor
κ
-(BETS)
2
FeBr
4
shows no spin modulation of the Shubnikov–de Haas oscillations, contrary to its paramagnetic state. This is unambiguous evidence for the spin degeneracy of Landau levels, a direct manifestation of the Zeeman spin–orbit coupling. Likewise, we show that spin modulation is absent in electron-doped Nd
1.85
Ce
0.15
CuO
4
, which evidences the presence of Néel order in this cuprate superconductor even at optimal doping. Obtained on two very different materials, our results demonstrate the generic character of the Zeeman spin–orbit coupling. |
| doi_str_mv | 10.1038/s41535-021-00309-6 |
| format | article |
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κ
-(BETS)
2
FeBr
4
shows no spin modulation of the Shubnikov–de Haas oscillations, contrary to its paramagnetic state. This is unambiguous evidence for the spin degeneracy of Landau levels, a direct manifestation of the Zeeman spin–orbit coupling. Likewise, we show that spin modulation is absent in electron-doped Nd
1.85
Ce
0.15
CuO
4
, which evidences the presence of Néel order in this cuprate superconductor even at optimal doping. Obtained on two very different materials, our results demonstrate the generic character of the Zeeman spin–orbit coupling.</description><identifier>ISSN: 2397-4648</identifier><identifier>EISSN: 2397-4648</identifier><identifier>DOI: 10.1038/s41535-021-00309-6</identifier><language>eng</language><publisher>London: Nature Publishing Group UK</publisher><subject>639/301/119/995 ; 639/766/119/995 ; Antiferromagnetism ; Condensed Matter ; Condensed Matter Physics ; Conductors ; Electron spin ; Industrial applications ; Modulation ; Organic superconductors ; Physics ; Physics and Astronomy ; Quantum Physics ; Spin-orbit interactions ; Strongly Correlated Electrons ; Structural Materials ; Surfaces and Interfaces ; Thin Films</subject><ispartof>npj quantum materials, 2021-02, Vol.6 (1), p.1-7, Article 11</ispartof><rights>The Author(s) 2021</rights><rights>The Author(s) 2021. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c529t-37f506afa7e0b89e783cc1caffa5cd1161cc78c30ec863ba4f867b4467a623383</citedby><cites>FETCH-LOGICAL-c529t-37f506afa7e0b89e783cc1caffa5cd1161cc78c30ec863ba4f867b4467a623383</cites><orcidid>0000-0001-5133-8253 ; 0000-0002-3011-0169 ; 0000-0002-0938-8537 ; 0000-0002-4125-1215 ; 0000-0002-7159-8578</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.proquest.com/docview/2486621124?pq-origsite=primo$$EHTML$$P50$$Gproquest$$Hfree_for_read</linktohtml><link.rule.ids>230,314,780,784,885,25752,27923,27924,37011,44589</link.rule.ids><backlink>$$Uhttps://hal.science/hal-02361673$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Ramazashvili, R.</creatorcontrib><creatorcontrib>Grigoriev, P. D.</creatorcontrib><creatorcontrib>Helm, T.</creatorcontrib><creatorcontrib>Kollmannsberger, F.</creatorcontrib><creatorcontrib>Kunz, M.</creatorcontrib><creatorcontrib>Biberacher, W.</creatorcontrib><creatorcontrib>Kampert, E.</creatorcontrib><creatorcontrib>Fujiwara, H.</creatorcontrib><creatorcontrib>Erb, A.</creatorcontrib><creatorcontrib>Wosnitza, J.</creatorcontrib><creatorcontrib>Gross, R.</creatorcontrib><creatorcontrib>Kartsovnik, M. V.</creatorcontrib><title>Experimental evidence for Zeeman spin–orbit coupling in layered antiferromagnetic conductors</title><title>npj quantum materials</title><addtitle>npj Quantum Mater</addtitle><description>Most of solid-state spin physics arising from spin–orbit coupling, from fundamental phenomena to industrial applications, relies on symmetry-protected degeneracies. So does the Zeeman spin–orbit coupling, expected to manifest itself in a wide range of antiferromagnetic conductors. Yet, experimental proof of this phenomenon has been lacking. Here we demonstrate that the Néel state of the layered organic superconductor
κ
-(BETS)
2
FeBr
4
shows no spin modulation of the Shubnikov–de Haas oscillations, contrary to its paramagnetic state. This is unambiguous evidence for the spin degeneracy of Landau levels, a direct manifestation of the Zeeman spin–orbit coupling. Likewise, we show that spin modulation is absent in electron-doped Nd
1.85
Ce
0.15
CuO
4
, which evidences the presence of Néel order in this cuprate superconductor even at optimal doping. 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D.</au><au>Helm, T.</au><au>Kollmannsberger, F.</au><au>Kunz, M.</au><au>Biberacher, W.</au><au>Kampert, E.</au><au>Fujiwara, H.</au><au>Erb, A.</au><au>Wosnitza, J.</au><au>Gross, R.</au><au>Kartsovnik, M. V.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Experimental evidence for Zeeman spin–orbit coupling in layered antiferromagnetic conductors</atitle><jtitle>npj quantum materials</jtitle><stitle>npj Quantum Mater</stitle><date>2021-02-05</date><risdate>2021</risdate><volume>6</volume><issue>1</issue><spage>1</spage><epage>7</epage><pages>1-7</pages><artnum>11</artnum><issn>2397-4648</issn><eissn>2397-4648</eissn><abstract>Most of solid-state spin physics arising from spin–orbit coupling, from fundamental phenomena to industrial applications, relies on symmetry-protected degeneracies. So does the Zeeman spin–orbit coupling, expected to manifest itself in a wide range of antiferromagnetic conductors. Yet, experimental proof of this phenomenon has been lacking. Here we demonstrate that the Néel state of the layered organic superconductor
κ
-(BETS)
2
FeBr
4
shows no spin modulation of the Shubnikov–de Haas oscillations, contrary to its paramagnetic state. This is unambiguous evidence for the spin degeneracy of Landau levels, a direct manifestation of the Zeeman spin–orbit coupling. Likewise, we show that spin modulation is absent in electron-doped Nd
1.85
Ce
0.15
CuO
4
, which evidences the presence of Néel order in this cuprate superconductor even at optimal doping. Obtained on two very different materials, our results demonstrate the generic character of the Zeeman spin–orbit coupling.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><doi>10.1038/s41535-021-00309-6</doi><tpages>7</tpages><orcidid>https://orcid.org/0000-0001-5133-8253</orcidid><orcidid>https://orcid.org/0000-0002-3011-0169</orcidid><orcidid>https://orcid.org/0000-0002-0938-8537</orcidid><orcidid>https://orcid.org/0000-0002-4125-1215</orcidid><orcidid>https://orcid.org/0000-0002-7159-8578</orcidid><oa>free_for_read</oa></addata></record> |
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| source | ProQuest - Publicly Available Content Database; Springer Nature - nature.com Journals - Fully Open Access |
| subjects | 639/301/119/995 639/766/119/995 Antiferromagnetism Condensed Matter Condensed Matter Physics Conductors Electron spin Industrial applications Modulation Organic superconductors Physics Physics and Astronomy Quantum Physics Spin-orbit interactions Strongly Correlated Electrons Structural Materials Surfaces and Interfaces Thin Films |
| title | Experimental evidence for Zeeman spin–orbit coupling in layered antiferromagnetic conductors |
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