Two-impurity Scattering in Quasi-one-dimensional Systems
Abstract
In a quasi-one-dimensional system (a tube) with low concentration of defects n the resistivity ρ has peaks (van-Hove singularities) as a function of Fermi-energy. We show that due to non-Born scattering effects a deep narrow gap should appear just in the center of each peak. The resistivity at the bottom of a gap (ρmin ∝ n2) is dominated by scattering at rare "twin" pairs of close defects, while scattering at solitary defects is suppressed. The predicted effect is characteristic for multi-channel systems, it can not be observed in strictly one-dimensional one.
- Publication:
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Soviet Journal of Experimental and Theoretical Physics Letters
- Pub Date:
- June 2021
- DOI:
- 10.1134/S0021364021130038
- arXiv:
- arXiv:2105.10182
- Bibcode:
- 2021JETPL.114...45I
- Keywords:
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- Condensed Matter - Mesoscale and Nanoscale Physics
- E-Print:
- doi:10.1134/S0021364021130038