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Electrically tunable long-distance transport in crystalline antiferromagnetic iron oxide
Spintronics uses spins, the intrinsic angular momentum of electrons, as an alternative for the electron charge. Its long-term goal is to develop beyond-Moore, low-dissipation technology devices, recently demonstrating long-distance transport of spin signals across ferromagnetic insulators 1 . Antife...
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Published in: | Nature (London) 2018-09, Vol.561 (7722), p.222-225 |
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container_issue | 7722 |
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container_title | Nature (London) |
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creator | Lebrun, R. Ross, A. Bender, S. A. Qaiumzadeh, A. Baldrati, L. Cramer, J. Brataas, A. Duine, R. A. Kläui, M. |
description | Spintronics uses spins, the intrinsic angular momentum of electrons, as an alternative for the electron charge. Its long-term goal is to develop beyond-Moore, low-dissipation technology devices, recently demonstrating long-distance transport of spin signals across ferromagnetic insulators
1
. Antiferromagnetically ordered materials, the most common class of magnetic materials, have several crucial advantages over ferromagnetic systems
2
. Antiferromagnets exhibit no net magnetic moment, rendering them stable and impervious to external fields. Additionally, they can be operated at THz frequencies
3
. Although their properties bode well for spin transport
4
–
7
, previous indirect observations indicate that spin transmission through antiferromagnets is limited to only a few nanometers
8
–
10
. Here we demonstrate the long-distance propagation of spin-currents through single-crystalline hematite (α-Fe
2
O
3
)
11
, the most common antiferromagnetic iron oxide, exploiting the spin Hall effect for spin injection. We control the spin-current flow by the interfacial spin-bias, tuning the antiferromagnetic resonance frequency with an external magnetic field
12
. This simple antiferromagnetic insulator conveys spin information parallel to the Néel order over distances exceeding tens of micrometers. This newly-discovered mechanism transports spin as efficiently as the net magnetic moments in the best-suited complex ferromagnets
1
. Our results pave the way to ultra-fast, low-power antiferromagnet-insulator-based spin-logic devices
6
,
13
that operate, without magnetic fields, at room temperature. |
doi_str_mv | 10.1038/s41586-018-0490-7 |
format | article |
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1
. Antiferromagnetically ordered materials, the most common class of magnetic materials, have several crucial advantages over ferromagnetic systems
2
. Antiferromagnets exhibit no net magnetic moment, rendering them stable and impervious to external fields. Additionally, they can be operated at THz frequencies
3
. Although their properties bode well for spin transport
4
–
7
, previous indirect observations indicate that spin transmission through antiferromagnets is limited to only a few nanometers
8
–
10
. Here we demonstrate the long-distance propagation of spin-currents through single-crystalline hematite (α-Fe
2
O
3
)
11
, the most common antiferromagnetic iron oxide, exploiting the spin Hall effect for spin injection. We control the spin-current flow by the interfacial spin-bias, tuning the antiferromagnetic resonance frequency with an external magnetic field
12
. This simple antiferromagnetic insulator conveys spin information parallel to the Néel order over distances exceeding tens of micrometers. This newly-discovered mechanism transports spin as efficiently as the net magnetic moments in the best-suited complex ferromagnets
1
. Our results pave the way to ultra-fast, low-power antiferromagnet-insulator-based spin-logic devices
6
,
13
that operate, without magnetic fields, at room temperature.</description><identifier>ISSN: 0028-0836</identifier><identifier>EISSN: 1476-4687</identifier><identifier>DOI: 10.1038/s41586-018-0490-7</identifier><identifier>PMID: 30209370</identifier><language>eng</language><ispartof>Nature (London), 2018-09, Vol.561 (7722), p.222-225</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>230,315,786,790,891,27957,27958</link.rule.ids></links><search><creatorcontrib>Lebrun, R.</creatorcontrib><creatorcontrib>Ross, A.</creatorcontrib><creatorcontrib>Bender, S. A.</creatorcontrib><creatorcontrib>Qaiumzadeh, A.</creatorcontrib><creatorcontrib>Baldrati, L.</creatorcontrib><creatorcontrib>Cramer, J.</creatorcontrib><creatorcontrib>Brataas, A.</creatorcontrib><creatorcontrib>Duine, R. A.</creatorcontrib><creatorcontrib>Kläui, M.</creatorcontrib><title>Electrically tunable long-distance transport in crystalline antiferromagnetic iron oxide</title><title>Nature (London)</title><description>Spintronics uses spins, the intrinsic angular momentum of electrons, as an alternative for the electron charge. Its long-term goal is to develop beyond-Moore, low-dissipation technology devices, recently demonstrating long-distance transport of spin signals across ferromagnetic insulators
1
. Antiferromagnetically ordered materials, the most common class of magnetic materials, have several crucial advantages over ferromagnetic systems
2
. Antiferromagnets exhibit no net magnetic moment, rendering them stable and impervious to external fields. Additionally, they can be operated at THz frequencies
3
. Although their properties bode well for spin transport
4
–
7
, previous indirect observations indicate that spin transmission through antiferromagnets is limited to only a few nanometers
8
–
10
. Here we demonstrate the long-distance propagation of spin-currents through single-crystalline hematite (α-Fe
2
O
3
)
11
, the most common antiferromagnetic iron oxide, exploiting the spin Hall effect for spin injection. We control the spin-current flow by the interfacial spin-bias, tuning the antiferromagnetic resonance frequency with an external magnetic field
12
. This simple antiferromagnetic insulator conveys spin information parallel to the Néel order over distances exceeding tens of micrometers. This newly-discovered mechanism transports spin as efficiently as the net magnetic moments in the best-suited complex ferromagnets
1
. Our results pave the way to ultra-fast, low-power antiferromagnet-insulator-based spin-logic devices
6
,
13
that operate, without magnetic fields, at room temperature.</description><issn>0028-0836</issn><issn>1476-4687</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNqljDtOxDAUAC0EYsPnAHS-gOE5dhKnoUGLOMAWdJHX8YaHnOfI9iJye1LQUFONNCMNYw8SHiUo85S1bEwrQBoBugfRXbBK6q4VujXdJasA6q0Y1e7YTc6fANDITl-znYIaetVBxd73wbuS0NkQVl7OZI_B8xBpEiPmYsl5XpKlvMRUOBJ3ad10CEieWyp48inF2U7kCzqOKRKP3zj6O3Z1siH7-1_esufX_eHlTSzn4-xH52nbhmFJONu0DtHi8LcQfgxT_BpabRrV1-rfgx9lN2Ls</recordid><startdate>20180901</startdate><enddate>20180901</enddate><creator>Lebrun, R.</creator><creator>Ross, A.</creator><creator>Bender, S. A.</creator><creator>Qaiumzadeh, A.</creator><creator>Baldrati, L.</creator><creator>Cramer, J.</creator><creator>Brataas, A.</creator><creator>Duine, R. A.</creator><creator>Kläui, M.</creator><scope>5PM</scope></search><sort><creationdate>20180901</creationdate><title>Electrically tunable long-distance transport in crystalline antiferromagnetic iron oxide</title><author>Lebrun, R. ; Ross, A. ; Bender, S. A. ; Qaiumzadeh, A. ; Baldrati, L. ; Cramer, J. ; Brataas, A. ; Duine, R. A. ; Kläui, M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-pubmedcentral_primary_oai_pubmedcentral_nih_gov_64853923</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lebrun, R.</creatorcontrib><creatorcontrib>Ross, A.</creatorcontrib><creatorcontrib>Bender, S. A.</creatorcontrib><creatorcontrib>Qaiumzadeh, A.</creatorcontrib><creatorcontrib>Baldrati, L.</creatorcontrib><creatorcontrib>Cramer, J.</creatorcontrib><creatorcontrib>Brataas, A.</creatorcontrib><creatorcontrib>Duine, R. A.</creatorcontrib><creatorcontrib>Kläui, M.</creatorcontrib><collection>PubMed Central (Full Participant titles)</collection><jtitle>Nature (London)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lebrun, R.</au><au>Ross, A.</au><au>Bender, S. A.</au><au>Qaiumzadeh, A.</au><au>Baldrati, L.</au><au>Cramer, J.</au><au>Brataas, A.</au><au>Duine, R. A.</au><au>Kläui, M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Electrically tunable long-distance transport in crystalline antiferromagnetic iron oxide</atitle><jtitle>Nature (London)</jtitle><date>2018-09-01</date><risdate>2018</risdate><volume>561</volume><issue>7722</issue><spage>222</spage><epage>225</epage><pages>222-225</pages><issn>0028-0836</issn><eissn>1476-4687</eissn><abstract>Spintronics uses spins, the intrinsic angular momentum of electrons, as an alternative for the electron charge. Its long-term goal is to develop beyond-Moore, low-dissipation technology devices, recently demonstrating long-distance transport of spin signals across ferromagnetic insulators
1
. Antiferromagnetically ordered materials, the most common class of magnetic materials, have several crucial advantages over ferromagnetic systems
2
. Antiferromagnets exhibit no net magnetic moment, rendering them stable and impervious to external fields. Additionally, they can be operated at THz frequencies
3
. Although their properties bode well for spin transport
4
–
7
, previous indirect observations indicate that spin transmission through antiferromagnets is limited to only a few nanometers
8
–
10
. Here we demonstrate the long-distance propagation of spin-currents through single-crystalline hematite (α-Fe
2
O
3
)
11
, the most common antiferromagnetic iron oxide, exploiting the spin Hall effect for spin injection. We control the spin-current flow by the interfacial spin-bias, tuning the antiferromagnetic resonance frequency with an external magnetic field
12
. This simple antiferromagnetic insulator conveys spin information parallel to the Néel order over distances exceeding tens of micrometers. This newly-discovered mechanism transports spin as efficiently as the net magnetic moments in the best-suited complex ferromagnets
1
. Our results pave the way to ultra-fast, low-power antiferromagnet-insulator-based spin-logic devices
6
,
13
that operate, without magnetic fields, at room temperature.</abstract><pmid>30209370</pmid><doi>10.1038/s41586-018-0490-7</doi><oa>free_for_read</oa></addata></record> |
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source | Nature_系列刊 |
title | Electrically tunable long-distance transport in crystalline antiferromagnetic iron oxide |
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