Slowing down of spin glass correlation length growth: Simulations meet experiments

The growth of the spin glass correlation length has been measured as a function of the waiting time tw on a single crystal of CuMn (6 at. %), reaching values ξ∼150 nm, larger than any other glassy correlation length measured to date. We find an aging rate dlntw/dlnξ larger than found in previous mea...

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Bibliographic Details
Published in:Physical review. B 2019-09, Vol.100 (9), Article 094202
Main Authors: Zhai, Qiang, Martin-Mayor, V., Schlagel, Deborah L., Kenning, Gregory G., Orbach, Raymond L.
Format: Article
Language:English
Subjects:
Correlation analysis
RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
Single crystals
Spin glasses
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Summary:The growth of the spin glass correlation length has been measured as a function of the waiting time tw on a single crystal of CuMn (6 at. %), reaching values ξ∼150 nm, larger than any other glassy correlation length measured to date. We find an aging rate dlntw/dlnξ larger than found in previous measurements, which evinces a dynamic slowing down as ξ grows. Our measured aging rate is compared with simulation results by the Janus Collaboration. After critical effects are taken into account, we find excellent agreement with the Janus data.
ISSN:2469-9950
2469-9969
DOI:10.1103/PhysRevB.100.094202