Autoren:	Richter, Nils Weber, Daniel Martin, Franziska Singh, Nirpendra Schwingenschlögl, Udo Lotsch, Bettina V. Kläui, Mathias
Titel:	Temperature-dependent magnetic anisotropy in the layered magnetic semiconductors CrI3 and CrBr3
Online-Publikationsdatum:	26-Aug-2019
Erscheinungsdatum:	2018
Sprache des Dokuments:	Englisch
Zusammenfassung/Abstract:	Chromium trihalides are layered and exfoliable semiconductors and exhibit unusual magnetic properties with a surprising temperature dependence of the magnetization. By analyzing the evolution of the magnetocrystalline anisotropy with temperature in chromium iodide CrI3, we find it strongly changes from K-u = 300 +/- 50 kJ/m(3) at 5 K to Ku = 43 +/- 7 kJ/m(3) at 60 K, close to the Curie temperature. We draw a direct comparison to CrBr3, which serves as a reference, and where we find results consistent with literature. In particular, we show that the anisotropy change in the iodide compound is more than 3 times larger than in the bromide. We analyze this temperature dependence using a classical model, showing that the anisotropy constant scales with the magnetization at any given temperature below the Curie temperature, indicating that the temperature dependence can be explained by a dominant uniaxial anisotropy where this scaling results from local spin clusters having thermally induced magnetization directions that deviate from the overall magnetization.
DDC-Sachgruppe:	530 Physik 530 Physics
Veröffentlichende Institution:	Johannes Gutenberg-Universität Mainz
Organisationseinheit:	FB 08 Physik, Mathematik u. Informatik
Veröffentlichungsort:	Mainz
ROR:	https://ror.org/023b0x485
DOI:	http://doi.org/10.25358/openscience-106
URN:	urn:nbn:de:hebis:77-publ-592110
Version:	Accepted version
Publikationstyp:	Zeitschriftenaufsatz
Nutzungsrechte:	Urheberrechtsschutz
Informationen zu den Nutzungsrechten:	https://rightsstatements.org/vocab/InC/1.0/
Zeitschrift:	Physical review materials 2 2
Seitenzahl oder Artikelnummer:	024004-1 024004-6
Verlag:	APS
Verlagsort:	College Park, Md.
Erscheinungsdatum:	2018
ISSN:	2475-9953
URL der Originalveröffentlichung:	http://dx.doi.org/10.1103/PhysRevMaterials.2.024004
DOI der Originalveröffentlichung:	10.1103/PhysRevMaterials.2.024004
Enthalten in den Sammlungen:	JGU-Publikationen