Spin freezing and slow magnetization dynamics in geometrically frustrated magnetic molecules with exchange disorder
C. Schröder, X. Fang, Y. Furukawa, M. Luban, R. Prozorov, F. Borsa, K. Kumagai, Journal of Physics: Condensed Matter 22 (2010).
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Artikel
| Veröffentlicht
| Englisch
Autor*in
Schröder, Christian
;
Fang, X;
Furukawa, Y;
Luban, M;
Prozorov, R;
Borsa, F;
Kumagai, K
;
Fang, X;
Furukawa, Y;
Luban, M;
Prozorov, R;
Borsa, F;
Kumagai, KAbstract
We show that intramolecular exchange disorder recently found in the geometrically frustrated magnetic molecules {Mo72Fe30} and {Mo72Cr30} leads, in a classical Heisenberg model description, to spin freezing and slow magnetization dynamics reminiscent of spin glass behaviour. Also we suggest that our low temperature and low magnetic field nuclear magnetic resonance (NMR) measurements on {Mo72Fe30}, showing rapid and strong broadening of the proton line width on cooling below 600 mK, are evidence for a crossover from paramagnetic behaviour to a frozen spin configuration. Similar broadening is observed in {Mo72Cr30}. This observed effect is consistent with our theory of spin freezing and slow magnetization dynamics in these systems due to exchange disorder.
Erscheinungsjahr
Zeitschriftentitel
Journal of Physics: Condensed Matter
Band
22
Zeitschriftennummer
21
Artikelnummer
216007
ISSN
eISSN
FH-PUB-ID
Zitieren
Schröder, Christian ; Fang, X ; Furukawa, Y ; Luban, M ; Prozorov, R ; Borsa, F ; Kumagai, K: Spin freezing and slow magnetization dynamics in geometrically frustrated magnetic molecules with exchange disorder. In: Journal of Physics: Condensed Matter Bd. 22, IOP Publishing (2010), Nr. 21
Schröder C, Fang X, Furukawa Y, et al. Spin freezing and slow magnetization dynamics in geometrically frustrated magnetic molecules with exchange disorder. Journal of Physics: Condensed Matter. 2010;22(21). doi:10.1088/0953-8984/22/21/216007
Schröder, C., Fang, X., Furukawa, Y., Luban, M., Prozorov, R., Borsa, F., & Kumagai, K. (2010). Spin freezing and slow magnetization dynamics in geometrically frustrated magnetic molecules with exchange disorder. Journal of Physics: Condensed Matter, 22(21). https://doi.org/10.1088/0953-8984/22/21/216007
@article{Schröder_Fang_Furukawa_Luban_Prozorov_Borsa_Kumagai_2010, title={Spin freezing and slow magnetization dynamics in geometrically frustrated magnetic molecules with exchange disorder}, volume={22}, DOI={10.1088/0953-8984/22/21/216007}, number={21216007}, journal={Journal of Physics: Condensed Matter}, publisher={IOP Publishing}, author={Schröder, Christian and Fang, X and Furukawa, Y and Luban, M and Prozorov, R and Borsa, F and Kumagai, K}, year={2010} }
Schröder, Christian, X Fang, Y Furukawa, M Luban, R Prozorov, F Borsa, and K Kumagai. “Spin Freezing and Slow Magnetization Dynamics in Geometrically Frustrated Magnetic Molecules with Exchange Disorder.” Journal of Physics: Condensed Matter 22, no. 21 (2010). https://doi.org/10.1088/0953-8984/22/21/216007.
C. Schröder et al., “Spin freezing and slow magnetization dynamics in geometrically frustrated magnetic molecules with exchange disorder,” Journal of Physics: Condensed Matter, vol. 22, no. 21, 2010.
Schröder, Christian, et al. “Spin Freezing and Slow Magnetization Dynamics in Geometrically Frustrated Magnetic Molecules with Exchange Disorder.” Journal of Physics: Condensed Matter, vol. 22, no. 21, 216007, IOP Publishing, 2010, doi:10.1088/0953-8984/22/21/216007.
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