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TT: Tiefe Temperaturen

TT 25: Correlated Electrons - Poster Session

TT 25.19: Poster

Mittwoch, 29. März 2006, 14:30–18:30, P1

Spectroscopic investigations of 2D J1-J2 quantum spin systems — •P. Scheib1, V. Gnezdilov2, P. Lemmens1, S. Gonthier3, P. Millet3, E. Kaul4, and Ch. Geibel41IPKM, TU Braunschweig, Germany — 2B.I. Verkin Inst. for Low Temp. Physics, NASU, Ukraine — 3CEMES, Toulouse, France — 4MPI-CPfS, Dresden, Germany

The interest in frustrated 2D quantum spin system is increasing as novel system have been discovered that enlarge the parameter space from 2D AF to mixed AF/FM systems. We report Raman scattering results on Li2VOSiO4, Pb2VO(PO4)2, and (Sr,Ba)ZnVO(PO4)2 to compare the effect of the local structure on the resulting AF and AF/FM couplings. This work has been supported partly by the ESF-HFM.

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DPG-Physik > DPG-Verhandlungen > 2006 > Dresden