Nonlinear transport near a quantum phase transition in two dimensions

Denis Dalidovich, Philip Phillips

Research output: Contribution to journalArticlepeer-review


The nonlinear transport near a quantum phase transition for the dissipative insulator-superconductor phase transition was studied within Landau theory. The scaling function for the nonlinear conductivity in the quantum disordered regime was obtained using the Green function formalism. It was found that the conductivity scaled as E2 at low fields but crossed over the large fields to a universal constant. The crossover between these two regimes was obtained when the length scale for the quantum fluctuations became comparable to that of the electric field within logarithmic accuracy.

Original languageEnglish (US)
Article number027004
Pages (from-to)027004-1-027004-4
JournalPhysical review letters
Issue number2
StatePublished - Jul 9 2004

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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