Physics Colloquium: Time reversal symmetry and spin selection in spintronics

Zoom: https://tau-ac-il.zoom.us/j/83476132371?pwd=NHZKL0N0ZHFQNFVka3BEaVJhVUI0Zz09

Abstract: 

Spintronics replaces electronics, by using both the charge and the spin of the electrons. Quantum information is contained in qubits (two-componennt spinors). Here we discuss mobile (flying) electrons, which can carry such quantum information. Tuning this information involves electric and magnetic fields, which vary geometrical and topological phases on the related spinors. Although the spin-orbit interaction (which determines the Aharonov-Casher phase) is a major tool for such tuning, it is often not sufficient, because it conserves time-reversal symmetry. The talk will describe several ways to break this symmetry, and allow spin selection, both for a mesoscopic interferometer and for helical molecules.

Event Organizer: Dr. Hadas Soifer