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Dresden 2006 – scientific programme

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TT: Tiefe Temperaturen

TT 25: Correlated Electrons - Poster Session

TT 25.20: Poster

Wednesday, March 29, 2006, 14:30–18:30, P1

Spectroscopic investigation of the crossover behavior in TeVO4 — •V. Gnezdilov1, G. Caimi2, L. Degiorgi2, P. Lemmens3, R.K. Kremer4, and H. Berger51B.I. Verkin Inst. for Low Temp. Phys., NASU, Kharkov, Ukraine — 2LfF, ETH Zürich, Switzerland — 3IPKM, TU Braunschweig, Germany — 4MPI-FKF, Stuttgart, Germany — 5IPMC, EPFL, Lausanne, Switzerland

The magnetic susceptibility of TeVO4 shows a crossover at T*=75K with different slopes of the reciprocal susceptibility. Using infrared absorption and Raman scattering we investigate the correlation of structural and electronic properties of this compound to understand the reason for this peculiar behavior. Spin-wave excitations are observed and analyzed for T<Tc=17K. This work has been supported by ESF-HFM.

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