Current-induced torques in structures with ultrathin IrMn antiferromagnets
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10313483" target="_blank" >RIV/00216208:11320/15:10313483 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevB.92.165424" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.92.165424</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.92.165424" target="_blank" >10.1103/PhysRevB.92.165424</a>
Alternative languages
Result language
angličtina
Original language name
Current-induced torques in structures with ultrathin IrMn antiferromagnets
Original language description
We report measurements of current-induced magnetic torques in structures containing a similar to 1-nm-thick layer of an antiferromagnet IrMn. We perform ac-electrical measurements in Ta/IrMn/CoFeB and Ta/IrMn structures below and above the Neel temperature of the ultrathin IrMn and compare the results with control experiments in a Ta/CoFeB bilayer. We employ the second harmonics technique to detect current-induced effects and perform symmetry analysis that enables us to separate distinct contributions to the signal. We identify signals generated by a thermal gradient in the sample and signals originating from current-induced torques. In the Ta/CoFeB bilayer we observe a current-induced torque acting on CoFeB consistent with the sign and magnitude of the spin Hall effect in Ta. In the Ta/IrMn/CoFeB trilayer, the opposite sign of spin Hall angles in IrMn and Ta results in a strongly suppressed spin torque acting in CoFeB at high temperatures where IrMn is paramagnetic. In the low tempera
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GB14-37427G" target="_blank" >GB14-37427G: Center of spintronics</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review B - Condensed Matter and Materials Physics
ISSN
1098-0121
e-ISSN
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Volume of the periodical
92
Issue of the periodical within the volume
16
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
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UT code for WoS article
000363013800005
EID of the result in the Scopus database
2-s2.0-84944790006