Surprising spin orbit effects in helical molecules

The coupling between the spin of an electron and its momentum is recognized to generate a variety of new phases in condensed matter systems For example in symmetry broken states spin orbit coupling permits exotic low energy excitations such as skyrmions in helimagnets Recently it was shown that when electrons pass through organic helix shaped molecules one spin type passes through much more easily In other words although these molecules are not magnetic they act as a spin filter In my talk I