Stephan Roche is ICREA Research Prof. working at the Catalan Institute of Nanosciences and Nanotechnology-ICN2 and the Barcelona Institute of Science and Technology. He leads the "Theoretical and Computational Nanoscience" group which focuses on quantum transport in Dirac materials (graphene and topological insulators). He pioneered the development of order N real space methods to compute wavepacket dynamics, the Kubo-Greenwood and Hall Kubo conductivities, and Landauer-Büttiker conductance.
He studied Theoretical Physics at ENS and UJF (France), received a PhD in Physics in 1996 (CNRS), and worked in Japan, Spain and Germany. He was appointed Prof. assistant at UJF (2000) and CEA Researcher (2004), and received the Friedrich Wilhelm Bessel prize from the A.v. Humboldt Foundation (Germany). He is the PI of ICN2 in the GRAPHENE FLAGSHIP, and deputy leader of the Graphene Spintronics WP.
At ICN2, S. Roche and his group theoretically explore exotic quantum transport in Dirac Matter including graphene and topological insulators. The targets of interest include the effect of chemical and structural disorders, as well as electron-phonon coupling and spin-orbit interaction on quantum interferences and decoherence mechanisms. A methodological research line consists in developing innovative transport approaches for charge, spin phonon, and thermal transport in disordered systems. Roche´s group has acquired and international leadership in such development which allowed pioneering studies of systems with up to one billion atoms. Startegic research lines include: (i) Quantum transport phenomena in Graphene,(ii) Spin dynamics in Dirac; (iii) Thermal properties and Thermoelectricity. The group has unveiled a fundamental mechanism of spin-pseudospin entanglement in graphene which opens novel perspectives for spin manipulation using extra degrees of freedom.
Key wordsnanoelectronics, nanoscience,nanotechnology,simulation,theory