2002/10/11 by Yong Baek Kim, Andrew J. Millis, A. J. Millis · 1 citation
Physics and Astronomy · #Advanced Condensed Matter Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.stat-mech #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.67.085102
arxiv created 2002/10/11 · openalex publication_date 2003/02/05 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The behavior of the residual (impurity-dominated) resistivity is computed for a material near a two-dimensional quantum critical point characterized by a divergent q=0 susceptibility. A singular renormalization of the amplitude for back scattering of an electron off of a single impurity is found. When the correlation length of the quantum critical point exceeds the mean free path, the singular renormalization is found to convert the familiar ``Altshuler-Aronov'' logarithmic correction to the conductivity into a squared-logarithmic form. Impurities can induce unconventional Friedel oscillations, which may be observable in scanning tunneling microscope experiments. Possible connections to the metamagnetic quantum critical end point recently proposed for the material Sr3Ru2O7 are discussed.