Condensed Matter Seminar Series
Conductance of Fully Equilibrated Quantum Wires
Konstantin Matveev
Argonne National Lab
Friday April 9, 1:30pm,
Room 298, Physics Building
I will discuss conductance of a quantum wire in the presence of weak
electron-electron scattering. In a sufficiently long wire the
scattering leads
to full equilibration of the electron distribution function in the
frame moving
with the electric current. At non-zero temperature this equilibrium
distribution
differs from the one supplied by the leads. As a result the contact
resistance
increases, and the quantized conductance of the wire acquires a
quadratic in temperature correction. The magnitude of the correction is
found by analysis of
the conservation laws of the system and does not depend on the details
of the
interaction mechanism responsible for equilibration.
Host: Stephen Teitsworth