IMSS-Symposium, October 17, 2008
Magnetization “steps” in the spin-1/2 kagome lattice of volborthite
H. Yoshida Y. Okamoto
RVB state, spin liquid or what?
long-standing issue on the frustrated lattice
*Outline
General aspects on the kagome AF magnets Volborthite vs Herbertsmithite common features of the S-1/2 kagome GS of volborthite: spin glass and liquids Magnetization “steps”
Materials: H. Yoshida, Y. Okamoto NMR: M. Yoshida and M. Takigawa LT Mag.: T. Tayama and T. Sakakibara HF Mag.: M. Tokunaga and K. Kindo (ISSP) ESR: S. Okubo and H. Ohta (Kobe Univ.) m SR: A. Fukaya and Y.J. Uemura
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