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Periodic Co/Nb pseudo spin valve for cryogenic memory
We present a study of magnetic structures with controllable effective exchange energy for Josephson switches and memory applications. As a basis for a weak link we propose to use a periodic structure composed of ferromagnetic (F) layers spaced by thin superconductors (s). Our calculations based on t...
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| Published in: | Beilstein journal of nanotechnology 2019, Vol.10 (1), p.833-839 |
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| Main Authors: | , , , , , , , , , |
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| cited_by | cdi_FETCH-LOGICAL-c478t-6300b6300fa1cbc35f8fbf2bb0d8e0db76ccc121f3265e5174101c59ead13773 |
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| cites | cdi_FETCH-LOGICAL-c478t-6300b6300fa1cbc35f8fbf2bb0d8e0db76ccc121f3265e5174101c59ead13773 |
| container_end_page | 839 |
| container_issue | 1 |
| container_start_page | 833 |
| container_title | Beilstein journal of nanotechnology |
| container_volume | 10 |
| creator | Klenov, Nikolay Khaydukov, Yury Bakurskiy, Sergey Morari, Roman Soloviev, Igor Boian, Vladimir Keller, Thomas Kupriyanov, Mikhail Sidorenko, Anatoli Keimer, Bernhard |
| description | We present a study of magnetic structures with controllable effective exchange energy for Josephson switches and memory applications. As a basis for a weak link we propose to use a periodic structure composed of ferromagnetic (F) layers spaced by thin superconductors (s). Our calculations based on the Usadel equations show that switching from parallel (P) to antiparallel (AP) alignment of neighboring F layers can lead to a significant enhancement of the critical current through the junction. To control the magnetic alignment we propose to use a periodic system whose unit cell is a pseudo spin valve of structure F
/s/F
/s where F
and F
are two magnetic layers having different coercive fields. In order to check the feasibility of controllable switching between AP and P states through the whole periodic structure, we prepared a superlattice [Co(1.5 nm)/Nb(8 nm)/Co(2.5 nm)/Nb(8 nm)]
between two superconducting layers of Nb(25 nm). Neutron scattering and magnetometry data showed that parallel and antiparallel alignment can be controlled with a magnetic field of only several tens of Oersted. |
| doi_str_mv | 10.3762/BJNANO.10.83 |
| format | article |
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/s/F
/s where F
and F
are two magnetic layers having different coercive fields. In order to check the feasibility of controllable switching between AP and P states through the whole periodic structure, we prepared a superlattice [Co(1.5 nm)/Nb(8 nm)/Co(2.5 nm)/Nb(8 nm)]
between two superconducting layers of Nb(25 nm). Neutron scattering and magnetometry data showed that parallel and antiparallel alignment can be controlled with a magnetic field of only several tens of Oersted.</description><identifier>ISSN: 2190-4286</identifier><identifier>EISSN: 2190-4286</identifier><identifier>DOI: 10.3762/BJNANO.10.83</identifier><identifier>PMID: 31019870</identifier><language>eng</language><publisher>Germany: Beilstein-Institut zur Föerderung der Chemischen Wissenschaften</publisher><subject>Alignment ; Coercivity ; Critical current (superconductivity) ; cryogenic computing ; Electrodes ; Energy ; Ferromagnetism ; Letter ; Magnetic measurement ; Nanoscience ; Nanotechnology ; Neutron scattering ; Periodic structures ; Physics ; spin valve ; Spin valves ; Stability ; superconducting spintronics ; Superconductor junctions ; Superconductors ; Superlattices ; Switches ; Switching ; Thin films ; Unit cell</subject><ispartof>Beilstein journal of nanotechnology, 2019, Vol.10 (1), p.833-839</ispartof><rights>Copyright © 2019, Klenov et al.; licensee Beilstein-Institut. 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>Copyright © 2019, Klenov et al. 2019 Klenov et al.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c478t-6300b6300fa1cbc35f8fbf2bb0d8e0db76ccc121f3265e5174101c59ead13773</citedby><cites>FETCH-LOGICAL-c478t-6300b6300fa1cbc35f8fbf2bb0d8e0db76ccc121f3265e5174101c59ead13773</cites><orcidid>0000-0001-9735-2720 ; 0000-0001-6265-3670 ; 0000-0001-9945-8342 ; 0000-0002-7653-5779</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.proquest.com/docview/2217193644/fulltextPDF?pq-origsite=primo$$EPDF$$P50$$Gproquest$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.proquest.com/docview/2217193644?pq-origsite=primo$$EHTML$$P50$$Gproquest$$Hfree_for_read</linktohtml><link.rule.ids>230,314,727,780,784,885,4024,25753,27923,27924,27925,37012,37013,44590,53791,53793,75126</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/31019870$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Klenov, Nikolay</creatorcontrib><creatorcontrib>Khaydukov, Yury</creatorcontrib><creatorcontrib>Bakurskiy, Sergey</creatorcontrib><creatorcontrib>Morari, Roman</creatorcontrib><creatorcontrib>Soloviev, Igor</creatorcontrib><creatorcontrib>Boian, Vladimir</creatorcontrib><creatorcontrib>Keller, Thomas</creatorcontrib><creatorcontrib>Kupriyanov, Mikhail</creatorcontrib><creatorcontrib>Sidorenko, Anatoli</creatorcontrib><creatorcontrib>Keimer, Bernhard</creatorcontrib><title>Periodic Co/Nb pseudo spin valve for cryogenic memory</title><title>Beilstein journal of nanotechnology</title><addtitle>Beilstein J Nanotechnol</addtitle><description>We present a study of magnetic structures with controllable effective exchange energy for Josephson switches and memory applications. As a basis for a weak link we propose to use a periodic structure composed of ferromagnetic (F) layers spaced by thin superconductors (s). Our calculations based on the Usadel equations show that switching from parallel (P) to antiparallel (AP) alignment of neighboring F layers can lead to a significant enhancement of the critical current through the junction. To control the magnetic alignment we propose to use a periodic system whose unit cell is a pseudo spin valve of structure F
/s/F
/s where F
and F
are two magnetic layers having different coercive fields. In order to check the feasibility of controllable switching between AP and P states through the whole periodic structure, we prepared a superlattice [Co(1.5 nm)/Nb(8 nm)/Co(2.5 nm)/Nb(8 nm)]
between two superconducting layers of Nb(25 nm). Neutron scattering and magnetometry data showed that parallel and antiparallel alignment can be controlled with a magnetic field of only several tens of Oersted.</description><subject>Alignment</subject><subject>Coercivity</subject><subject>Critical current (superconductivity)</subject><subject>cryogenic computing</subject><subject>Electrodes</subject><subject>Energy</subject><subject>Ferromagnetism</subject><subject>Letter</subject><subject>Magnetic measurement</subject><subject>Nanoscience</subject><subject>Nanotechnology</subject><subject>Neutron scattering</subject><subject>Periodic structures</subject><subject>Physics</subject><subject>spin valve</subject><subject>Spin valves</subject><subject>Stability</subject><subject>superconducting spintronics</subject><subject>Superconductor junctions</subject><subject>Superconductors</subject><subject>Superlattices</subject><subject>Switches</subject><subject>Switching</subject><subject>Thin films</subject><subject>Unit cell</subject><issn>2190-4286</issn><issn>2190-4286</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><sourceid>PIMPY</sourceid><sourceid>DOA</sourceid><recordid>eNpdkUtPGzEQgK2qqKDAredqJS49NODH-nWpRKPyEgocuFu2dxw22l2ndjZS_n0dAgjwwZ6xP30eexD6TvAZk4Ke_7mdX8zvz0qq2Bd0RInG05oq8fVdfIhOcl7iMmpMlVbf0CEjmGgl8RHiD5Da2LS-msXzuatWGcYmVnnVDtXGdhuoQkyVT9u4gKFQPfQxbY_RQbBdhpOXdYIeL_8-zq6nd_dXN7OLu6mvpVpPBcPY7aZgiXee8aCCC9Q53CjAjZPCe08oCYwKDpzIutTluQbbECYlm6CbvbaJdmlWqe1t2ppoW_O8EdPC2LRufQeGOq5d0JZRSmouGyUt0SAcxwo8w7a4fu9dq9H10HgY1sl2H6QfT4b2ySzixohaCEl1Efx8EaT4b4S8Nn2bPXSdHSCO2ZSLOSaEM1rQ00_oMo5pKD-1oyTRTNR1oX7tKZ9izgnCWzEEm113jVsOdoi7VLGC_3j_gDf4tZfsP65JnuM</recordid><startdate>2019</startdate><enddate>2019</enddate><creator>Klenov, Nikolay</creator><creator>Khaydukov, Yury</creator><creator>Bakurskiy, Sergey</creator><creator>Morari, Roman</creator><creator>Soloviev, Igor</creator><creator>Boian, Vladimir</creator><creator>Keller, Thomas</creator><creator>Kupriyanov, Mikhail</creator><creator>Sidorenko, Anatoli</creator><creator>Keimer, Bernhard</creator><general>Beilstein-Institut zur Föerderung der Chemischen Wissenschaften</general><general>Beilstein-Institut</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7XB</scope><scope>88I</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BFMQW</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>GNUQQ</scope><scope>HCIFZ</scope><scope>M2P</scope><scope>P5Z</scope><scope>P62</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>Q9U</scope><scope>7X8</scope><scope>5PM</scope><scope>DOA</scope><orcidid>https://orcid.org/0000-0001-9735-2720</orcidid><orcidid>https://orcid.org/0000-0001-6265-3670</orcidid><orcidid>https://orcid.org/0000-0001-9945-8342</orcidid><orcidid>https://orcid.org/0000-0002-7653-5779</orcidid></search><sort><creationdate>2019</creationdate><title>Periodic Co/Nb pseudo spin valve for cryogenic memory</title><author>Klenov, Nikolay ; 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As a basis for a weak link we propose to use a periodic structure composed of ferromagnetic (F) layers spaced by thin superconductors (s). Our calculations based on the Usadel equations show that switching from parallel (P) to antiparallel (AP) alignment of neighboring F layers can lead to a significant enhancement of the critical current through the junction. To control the magnetic alignment we propose to use a periodic system whose unit cell is a pseudo spin valve of structure F
/s/F
/s where F
and F
are two magnetic layers having different coercive fields. In order to check the feasibility of controllable switching between AP and P states through the whole periodic structure, we prepared a superlattice [Co(1.5 nm)/Nb(8 nm)/Co(2.5 nm)/Nb(8 nm)]
between two superconducting layers of Nb(25 nm). Neutron scattering and magnetometry data showed that parallel and antiparallel alignment can be controlled with a magnetic field of only several tens of Oersted.</abstract><cop>Germany</cop><pub>Beilstein-Institut zur Föerderung der Chemischen Wissenschaften</pub><pmid>31019870</pmid><doi>10.3762/BJNANO.10.83</doi><tpages>7</tpages><orcidid>https://orcid.org/0000-0001-9735-2720</orcidid><orcidid>https://orcid.org/0000-0001-6265-3670</orcidid><orcidid>https://orcid.org/0000-0001-9945-8342</orcidid><orcidid>https://orcid.org/0000-0002-7653-5779</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Alignment Coercivity Critical current (superconductivity) cryogenic computing Electrodes Energy Ferromagnetism Letter Magnetic measurement Nanoscience Nanotechnology Neutron scattering Periodic structures Physics spin valve Spin valves Stability superconducting spintronics Superconductor junctions Superconductors Superlattices Switches Switching Thin films Unit cell |
| title | Periodic Co/Nb pseudo spin valve for cryogenic memory |
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