Solid state physics

Vanadates

SVOWe have improved the sythesis technics to get ultra pure ceramics of Sr2VO4 material. Performing optics, transport and structural analysis, we have demonstrated that the material undergoes an exotic complex series of spin-orbital transitions.

J. Teyssier et al.in preparation
J. Deisenhofer et al., Phys. Rev. B 86, 214417 (2012)

M. V. Eremin et al., Phys. Rev. B 84, 212407 (2011)
J. Teyssier et al., Phys. Rev. B 84, 205130 (2011)

R. Viennois et al., Journal of physics : conference series 200, 012219 (2010)

Silicies

We have developped a crystal growth technics based on the levitating crucible. We have grown many ternary silicides like MnCoSi, CoNiSi, FeCoSi and investigated different aspects of structural and magnetic phase diagram.

FeCoSi_JT13

J. Teyssier et al., Phys. Rev. B 82, 064417 (2010)
J. Teyssier et al., Journal of alloys and compounds 465 (2008)
R. Tediosi et al.,Phys. Rev. B 80, 035107 (2009)

BoridesFigZrB12

We have been precursors in the extraction of the electron-phonon coupling function from optical spectroscopy measurements. Our work on borides was both on an experimental side but we have also calculated the band structure of the material and computed the optical conductivity and the de Haas–van Alphen cross sections.

J. Teyssier et al., Phys. Rev. B 78, 134504 (2008)
J. Teyssier et al., Phys. Rev. B 75, 134503 (2007)
J. Teyssier et al., Physica Status Solidi C 3 (2006) 3114-3117

V.A. Gasparov et al., Phys. Rev. Lett. 101, 097006 (2008)

Some details about programs and psoeudo-potentials I used in these references are given here

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