Giant magnetic response of a two-dimensional antiferromagnet

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10379324" target="_blank" >RIV/00216208:11320/18:10379324 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/18:00497895
Result on the web
<a href="https://doi.org/10.1038/s41567-018-0152-6" target="_blank" >https://doi.org/10.1038/s41567-018-0152-6</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s41567-018-0152-6" target="_blank" >10.1038/s41567-018-0152-6</a>

Result language
angličtina
Original language name
Giant magnetic response of a two-dimensional antiferromagnet
Original language description
A fundamental difference between antiferromagnets and ferromagnets is the lack of linear coupling to a uniform magnetic field due to the staggered order parameter(1). Such coupling is possible via the Dzyaloshinskii-Moriya (DM) interaction(2,3), but at the expense of reduced antiferromagnetic (AFM) susceptibility due to the canting-induced spin anisotropy(4). We solve this long-standing problem with a top-down approach that utilizes spin-orbit coupling in the presence of a hidden SU(2) symmetry. We demonstrate giant AFM responses to sub-tesla external fields by exploiting the extremely strong two-dimensional critical fluctuations preserved under a symmetry-invariant exchange anisotropy, which is built into a square lattice artificially synthesized as a superlattice of SrIrO3 and SrTiO3. The observed field-induced logarithmic increase of the ordering temperature enables highly efficient control of the AFM order. Our results demonstrate that symmetry can be exploited in spin-orbit-coupled magnets to develop functional AFM materials for fast and secured spintronic devices(5-9).
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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