2/25/2018

PRESENTER: Prof. Frédéric Piéchon

INSTITUTE: Laboratoire de Physique des Solides, Orsay CNRS, Universit. Paris-Sud, France

DATE: Thursday, March 01, 2018

TIME: 10:00 AM - 11:00 AM

LOCATION: Ibn Sina Building B3/L5/R5220

**“Geometrical description of the orbital magnetic susceptibility”**

ABSTRACT

BIOGRAPHY

Frédéric Piéchon studied at the university Paris-Sud Orsay and obtained a Phd in Physics in 1995. During his Phd he studied electronic properties of quasicrystals under the supervision of Anuradha Jagannathan at the Laboratoire de Physique des Solides d'Orsay. After a first postdoc at the University of Stuttgart in the group of Prof. H-R. Trebin and a second postdoc at the Max Planck Institut Göttingen in the group of T. Geisel, he obtained a CNRS researcher full position in 1998 at the Laboratoire de Physique des Solides Orsay. He has then worked successively on Luttinger liquids in multiterminal geometry, Boltzmann theory of spin transfer torque and Boltzmann transport in multilayer systems in the Knudsen regime. From 2008 he started working on Graphene and other 2D multiband systems exhibiting Dirac or Weyl points. In particular together with G. Montambaux, J-N Fuchs and M-O Goerbig, they provide the two distinct minimal low energy models that describe the merging or emerging of two Dirac points with either opposite or equal chiralities. Since 2014, he is studying the orbital magnetism and magneto-transport properties of multiband systems in order to understand and to exhibit the importance of interband effects encoded in both the Berry curvature and quantum metric tensors.