Speaker
Diego Frustaglia
Description
Research on spin geometric (Berry) phases in mesoscopic
systems has been active for 20 years already. During this
time, several proposals were put forward for the detection
of topological effects in spin interferometers subject to
magnetic textures, accompanied by several experimental
attempts of different success. However, incontrovertible
evidence of these effects was found only recently in
mesoscopic rings under the action to spin-orbit coupling
(Rashba rings), providing a new impulse to the field. Here,
after a brief account of previous achievements, we shall
discuss some new possibilities for electronic manipulation
based on the control of the spin geometric phases in
nanodevices as Rashba loops (rings and polygons) subject to
additional magnetic fields.
