Berlin 2015 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

TT: Fachverband Tiefe Temperaturen

TT 71: Correlated Electrons: Poster Session

TT 71.33: Poster

Mittwoch, 18. März 2015, 15:00–18:00, Poster B

Spin dynamics in the kagome compound YBaCo3AlO7 — •M. Iakovleva1,2, E. Vavilova1,2, H.-J. Grafe1, M. Valldor3, V. Kataev1, and B. Büchner11IFW Dresden, 01069 Dresden, Germany — 2Zavoisky Physical-Technical Institute, 420029 Kazan, Russia — 3MPI CPfS, 01069 Dresden, Germany

YBaCo3AlO7 is a transition metal oxide compound with a magnetic kagome substructure where unconventional ground states such as a spin liquid can be expected. We have investigated the ground state and low energy spin dynamics of this material by 27Al nuclear magnetic resonance spectroscopy.

The characteristic features of the spectral shape and of the relaxation rate temperature dependences show that short-range quasi static correlations occur in the system but not a long-range antiferromagnetic order. We compare our NMR results with AC and DC susceptibility measurements and discuss a possible realization of a spin glass state due to intrinsic structural disorder in this material.

100% | Mobil-Ansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2015 > Berlin