What is recorded here?
Polar magneto-optical Kerr microscopy of exfoliated chromium triiodide revealed hysteresis and remanent out-of-plane magnetization down to a single atomic layer. The authors reported an approximately 45 K monolayer ordering temperature and a distinct suppressed low-field signal in bilayer samples, consistent with antiferromagnetic interlayer alignment.
Source-linked catalogue note. A detailed explanatory guide has not yet been prepared for this entry.
Scientific scope
The magnetic order is inferred from Kerr rotation and its layer-dependent optical response, which includes thin-film interference; it is not a direct spin-resolved image. The bilayer spin arrangement is an interpretation of the measured field-dependent response, and the mechanism of the interlayer coupling was left open. The finite anisotropy setting does not contradict the isotropic Mermin–Wagner result. The optical analysis models interference and fits an unknown complex magneto-optic parameter to trilayer and bulk data; the authors say it does not incorporate layer-dependent electronic-structure changes. The observed Kerr rotation is therefore not proportional to layer count or magnetization without qualification. The source includes supplementary derivations; the raw measurements and final journal version have not been independently reconciled here.
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People and systems
Bevin Huang; Genevieve Clark; Efren Navarro-Moratalla; Dahlia R. Klein; Ran Cheng; Kyle L. Seyler; Ding Zhong; Emma Schmidgall; Michael A. McGuire; David H. Cobden; Wang Yao; Di Xiao; Pablo Jarillo-Herrero; Xiaodong Xu
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English catalogue narrative
Ferromagnetism in a monolayer of chromium triiodide
Polar magneto-optical Kerr microscopy of exfoliated chromium triiodide revealed hysteresis and remanent out-of-plane magnetization down to a single atomic layer. The authors reported an approximately 45 K monolayer ordering temperature and a distinct suppressed low-field signal in bilayer samples, consistent with antiferromagnetic interlayer alignment.
Scientific scope
The magnetic order is inferred from Kerr rotation and its layer-dependent optical response, which includes thin-film interference; it is not a direct spin-resolved image. The bilayer spin arrangement is an interpretation of the measured field-dependent response, and the mechanism of the interlayer coupling was left open. The finite anisotropy setting does not contradict the isotropic Mermin–Wagner result. The optical analysis models interference and fits an unknown complex magneto-optic parameter to trilayer and bulk data; the authors say it does not incorporate layer-dependent electronic-structure changes. The observed Kerr rotation is therefore not proportional to layer count or magnetization without qualification. The source includes supplementary derivations; the raw measurements and final journal version have not been independently reconciled here.
Reading status
This is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.
People and systems
Bevin Huang; Genevieve Clark; Efren Navarro-Moratalla; Dahlia R. Klein; Ran Cheng; Kyle L. Seyler; Ding Zhong; Emma Schmidgall; Michael A. McGuire; David H. Cobden; Wang Yao; Di Xiao; Pablo Jarillo-Herrero; Xiaodong Xu
These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.