Comparison of energy and phase relaxation in metallic wires

A. B. Gougam, F. Pierre, H. Pothier +2

We have measured the phase coherence time, ${\tau }_{\varphi },$ in long, narrow wires of Au, Ag, and Cu, over the temperature range 40 mK-6 K. In the Cu and Au wires, ${\tau }_{\varphi }$ saturates at low temp…