Pressure tuning of the spin-orbit coupled ground state in Sr2IrO4

Pressure tuning of the spin-orbit coupled ground state in Sr2IrO4

X-ray absorption spectroscopy studies of the magnetic-insulating ground state of Sr2IrO4 at ambient pressure show a clear deviation from a strong spin-orbit (SO) limit J(eff)=1/2 state, a result of local exchange interactions and a nonzero tetragonal crystal field mixing SO split J(eff)=1/2, 3/2 sta...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Physical review letters 2012-07, Vol.109 (2), p.027204-027204
Hauptverfasser: Haskel, D, Fabbris, G, Zhernenkov, Mikhail, Kong, P P, Jin, C Q, Cao, G, van Veenendaal, M
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 027204
container_issue 2
container_start_page 027204
container_title Physical review letters
container_volume 109
creator Haskel, D
Fabbris, G
Zhernenkov, Mikhail
Kong, P P
Jin, C Q
Cao, G
van Veenendaal, M
description X-ray absorption spectroscopy studies of the magnetic-insulating ground state of Sr2IrO4 at ambient pressure show a clear deviation from a strong spin-orbit (SO) limit J(eff)=1/2 state, a result of local exchange interactions and a nonzero tetragonal crystal field mixing SO split J(eff)=1/2, 3/2 states. X-ray magnetic circular dichroism measurements in a diamond anvil cell show a magnetic transition at a pressure of ∼17  GPa, where the "weak" ferromagnetic moment is quenched despite transport measurements showing insulating behavior to at least 40 GPa. The magnetic transition has implications for the origin of the insulating gap and the nature of exchange interactions in this SO coupled system. The expectation value of the angular part of the SO interaction, , extrapolates to zero at ∼80-90  GPa where an increased bandwidth strongly mixes J(eff)=1/2, 3/2 states and SO interactions no longer dominate the electronic ground state of Sr2IrO4.
doi_str_mv 10.1103/PhysRevLett.109.027204
format Article
fullrecord <record><control><sourceid>proquest_osti_</sourceid><recordid>TN_cdi_osti_scitechconnect_1102908</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>1082408884</sourcerecordid><originalsourceid>FETCH-LOGICAL-o168t-f5009b40a2d4a153bbc30e41250dab9c5a9ccc1e5f0cb04ddfc91a73e58e36bb3</originalsourceid><addsrcrecordid>eNo10MlqwzAUhWFRWpo07SsE0VU3Tq8Gx_IyhA6BQEKHtZHk60TFsVJJLuTta2i6OpuPs_gJmTKYMQbicbs_xTf8WWNKMwblDHjBQV6QMYOizArG5CUZAwiWlQDFiNzE-AUAjM_VNRlxAQIGPyaLbcAY-4A09Z3rdtQ3NO2RxqPrMh-MS9T6_thiTXfB911NY9IJqevoe-CrsJG35KrRbcS7807I5_PTx_I1W29eVsvFOvNsrlLW5AClkaB5LTXLhTFWAErGc6i1KW2uS2stw7wBa0DWdWNLpguBuUIxN0ZMyP3fr4_JVdG6hHZvfdehTdXQhJegBvTwh47Bf_cYU3Vw0WLb6g59HysGiktQSsmBTs-0Nwesq2NwBx1O1X8b8Qu9a2go</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1082408884</pqid></control><display><type>article</type><title>Pressure tuning of the spin-orbit coupled ground state in Sr2IrO4</title><source>American Physical Society Journals</source><creator>Haskel, D ; Fabbris, G ; Zhernenkov, Mikhail ; Kong, P P ; Jin, C Q ; Cao, G ; van Veenendaal, M</creator><creatorcontrib>Haskel, D ; Fabbris, G ; Zhernenkov, Mikhail ; Kong, P P ; Jin, C Q ; Cao, G ; van Veenendaal, M</creatorcontrib><description>X-ray absorption spectroscopy studies of the magnetic-insulating ground state of Sr2IrO4 at ambient pressure show a clear deviation from a strong spin-orbit (SO) limit J(eff)=1/2 state, a result of local exchange interactions and a nonzero tetragonal crystal field mixing SO split J(eff)=1/2, 3/2 states. X-ray magnetic circular dichroism measurements in a diamond anvil cell show a magnetic transition at a pressure of ∼17  GPa, where the "weak" ferromagnetic moment is quenched despite transport measurements showing insulating behavior to at least 40 GPa. The magnetic transition has implications for the origin of the insulating gap and the nature of exchange interactions in this SO coupled system. The expectation value of the angular part of the SO interaction, &lt;L·S&gt;, extrapolates to zero at ∼80-90  GPa where an increased bandwidth strongly mixes J(eff)=1/2, 3/2 states and SO interactions no longer dominate the electronic ground state of Sr2IrO4.</description><identifier>ISSN: 0031-9007</identifier><identifier>EISSN: 1079-7114</identifier><identifier>DOI: 10.1103/PhysRevLett.109.027204</identifier><identifier>PMID: 23030204</identifier><language>eng</language><publisher>United States: American Physical Society</publisher><ispartof>Physical review letters, 2012-07, Vol.109 (2), p.027204-027204</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,780,784,885,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/23030204$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/1102908$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Haskel, D</creatorcontrib><creatorcontrib>Fabbris, G</creatorcontrib><creatorcontrib>Zhernenkov, Mikhail</creatorcontrib><creatorcontrib>Kong, P P</creatorcontrib><creatorcontrib>Jin, C Q</creatorcontrib><creatorcontrib>Cao, G</creatorcontrib><creatorcontrib>van Veenendaal, M</creatorcontrib><title>Pressure tuning of the spin-orbit coupled ground state in Sr2IrO4</title><title>Physical review letters</title><addtitle>Phys Rev Lett</addtitle><description>X-ray absorption spectroscopy studies of the magnetic-insulating ground state of Sr2IrO4 at ambient pressure show a clear deviation from a strong spin-orbit (SO) limit J(eff)=1/2 state, a result of local exchange interactions and a nonzero tetragonal crystal field mixing SO split J(eff)=1/2, 3/2 states. X-ray magnetic circular dichroism measurements in a diamond anvil cell show a magnetic transition at a pressure of ∼17  GPa, where the "weak" ferromagnetic moment is quenched despite transport measurements showing insulating behavior to at least 40 GPa. The magnetic transition has implications for the origin of the insulating gap and the nature of exchange interactions in this SO coupled system. The expectation value of the angular part of the SO interaction, &lt;L·S&gt;, extrapolates to zero at ∼80-90  GPa where an increased bandwidth strongly mixes J(eff)=1/2, 3/2 states and SO interactions no longer dominate the electronic ground state of Sr2IrO4.</description><issn>0031-9007</issn><issn>1079-7114</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNo10MlqwzAUhWFRWpo07SsE0VU3Tq8Gx_IyhA6BQEKHtZHk60TFsVJJLuTta2i6OpuPs_gJmTKYMQbicbs_xTf8WWNKMwblDHjBQV6QMYOizArG5CUZAwiWlQDFiNzE-AUAjM_VNRlxAQIGPyaLbcAY-4A09Z3rdtQ3NO2RxqPrMh-MS9T6_thiTXfB911NY9IJqevoe-CrsJG35KrRbcS7807I5_PTx_I1W29eVsvFOvNsrlLW5AClkaB5LTXLhTFWAErGc6i1KW2uS2stw7wBa0DWdWNLpguBuUIxN0ZMyP3fr4_JVdG6hHZvfdehTdXQhJegBvTwh47Bf_cYU3Vw0WLb6g59HysGiktQSsmBTs-0Nwesq2NwBx1O1X8b8Qu9a2go</recordid><startdate>20120713</startdate><enddate>20120713</enddate><creator>Haskel, D</creator><creator>Fabbris, G</creator><creator>Zhernenkov, Mikhail</creator><creator>Kong, P P</creator><creator>Jin, C Q</creator><creator>Cao, G</creator><creator>van Veenendaal, M</creator><general>American Physical Society</general><scope>NPM</scope><scope>7X8</scope><scope>OTOTI</scope></search><sort><creationdate>20120713</creationdate><title>Pressure tuning of the spin-orbit coupled ground state in Sr2IrO4</title><author>Haskel, D ; Fabbris, G ; Zhernenkov, Mikhail ; Kong, P P ; Jin, C Q ; Cao, G ; van Veenendaal, M</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-o168t-f5009b40a2d4a153bbc30e41250dab9c5a9ccc1e5f0cb04ddfc91a73e58e36bb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Haskel, D</creatorcontrib><creatorcontrib>Fabbris, G</creatorcontrib><creatorcontrib>Zhernenkov, Mikhail</creatorcontrib><creatorcontrib>Kong, P P</creatorcontrib><creatorcontrib>Jin, C Q</creatorcontrib><creatorcontrib>Cao, G</creatorcontrib><creatorcontrib>van Veenendaal, M</creatorcontrib><collection>PubMed</collection><collection>MEDLINE - Academic</collection><collection>OSTI.GOV</collection><jtitle>Physical review letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Haskel, D</au><au>Fabbris, G</au><au>Zhernenkov, Mikhail</au><au>Kong, P P</au><au>Jin, C Q</au><au>Cao, G</au><au>van Veenendaal, M</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Pressure tuning of the spin-orbit coupled ground state in Sr2IrO4</atitle><jtitle>Physical review letters</jtitle><addtitle>Phys Rev Lett</addtitle><date>2012-07-13</date><risdate>2012</risdate><volume>109</volume><issue>2</issue><spage>027204</spage><epage>027204</epage><pages>027204-027204</pages><issn>0031-9007</issn><eissn>1079-7114</eissn><abstract>X-ray absorption spectroscopy studies of the magnetic-insulating ground state of Sr2IrO4 at ambient pressure show a clear deviation from a strong spin-orbit (SO) limit J(eff)=1/2 state, a result of local exchange interactions and a nonzero tetragonal crystal field mixing SO split J(eff)=1/2, 3/2 states. X-ray magnetic circular dichroism measurements in a diamond anvil cell show a magnetic transition at a pressure of ∼17  GPa, where the "weak" ferromagnetic moment is quenched despite transport measurements showing insulating behavior to at least 40 GPa. The magnetic transition has implications for the origin of the insulating gap and the nature of exchange interactions in this SO coupled system. The expectation value of the angular part of the SO interaction, &lt;L·S&gt;, extrapolates to zero at ∼80-90  GPa where an increased bandwidth strongly mixes J(eff)=1/2, 3/2 states and SO interactions no longer dominate the electronic ground state of Sr2IrO4.</abstract><cop>United States</cop><pub>American Physical Society</pub><pmid>23030204</pmid><doi>10.1103/PhysRevLett.109.027204</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record>
fulltext fulltext
identifier ISSN: 0031-9007
ispartof Physical review letters, 2012-07, Vol.109 (2), p.027204-027204
issn 0031-9007
1079-7114
language eng
recordid cdi_osti_scitechconnect_1102908
source American Physical Society Journals
title Pressure tuning of the spin-orbit coupled ground state in Sr2IrO4
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-29T05%3A55%3A55IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_osti_&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Pressure%20tuning%20of%20the%20spin-orbit%20coupled%20ground%20state%20in%20Sr2IrO4&rft.jtitle=Physical%20review%20letters&rft.au=Haskel,%20D&rft.date=2012-07-13&rft.volume=109&rft.issue=2&rft.spage=027204&rft.epage=027204&rft.pages=027204-027204&rft.issn=0031-9007&rft.eissn=1079-7114&rft_id=info:doi/10.1103/PhysRevLett.109.027204&rft_dat=%3Cproquest_osti_%3E1082408884%3C/proquest_osti_%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=1082408884&rft_id=info:pmid/23030204&rfr_iscdi=true