Spin parity effects in atomic scale spintronics
Jeudi 12 Janvier 2012 à 14h
Amphitheatre P015 de l'Ecole Grenoble INP PHELMA Polygone
23 rue des martyrs -
38000 Grenoble
Joaquín Fernández-Rossier holds both a Diploma (1994) and a Phd (1999) on Physics from the Universidad Autónoma de Madrid. He spend 2 years as a postdoctoral researcher at the Physics Department of the University of California San Diego and 18 months at the Physics Department of the University of Texas at Austin. In 2003 he obtained a Ramon y Cajal assistant professor position in the Universidad de Alicante and received a Chair of Excellence from the Nanosciences Foundation in 2007.
Amazing progress in
nanoelectronics has made it possible to fabricate devices whose
macroscopic behavior depends on the quantum state of a few ( one) atomic
spins. This includes NV centers in diamond, single Mn-doped
semiconductor quantum dots, both probed optically, as well as single
magnetic adatoms and mollecules probed with STM and/or break junctions
transport experiments. Quantized spins with integer spin have very
different electronic properties from those with semi-integer spins.
In
this talk I discuss, from the theory standpoint, the effect of
spin-parity on the spin dynamics of these systems and how it affects
their functionality. I will also propose an experiment to measure the
so called diabolic points using inelastic electron tunneling
spectroscopy.