T7 - Coherent Transport
8 Novembro 2022, 14:00 • Maria Margarida Cruz
Coherent transport through a one-dimensional conductor with two scattering centers. Scattering matrix (S) and transfer matrix (T). Relationship between both matrices.
Difference between the electrical resistances obtained with coherent transport and with incoherent transport. Diffusive coherent transport. Weak localization effect.
Electrons with trajectories enclosing magnetic flux. Phase variation. Aharonov-Bohm effect.
Explanation of the destruction of the weak localization effect by the magnetic field.
Weak localization and Aharonov-Bohm effect h/2e.