Warning: The NCBI web site requires JavaScript to function. more...
Generate a file for use with external citation management software.
National High Field Magnetic Laboratory, Florida State University, Tallahassee, Florida 32310, USA.
The problem of nonlinear transport near a quantum phase transition is solved within the Landau theory for the dissipative insulator-superconductor phase transition in two dimensions. Using the nonequilibrium Schwinger round-trip Green function formalism, we obtain the scaling function for the nonlinear conductivity in the quantum-disordered regime. We find that the conductivity scales as E2 at low fields but crosses over at large fields to a universal constant on the order of e(2)/h. The crossover between these two regimes obtains when the length scale for the quantum fluctuations becomes comparable to that of the electric field within logarithmic accuracy.
Your browsing activity is empty.
Activity recording is turned off.
Turn recording back on