Exact solution of electronic transport in semiconductors dominated by scattering on polaronic impurities

Scientific paper - Original scientific paper

• Author: Juraj Krsnik
• Author: Ivo Batistić
• Author: Anja Marunović
• Author: Eduard Tutiš
• Author: Osor-Slaven Barišić
• Author's institution: University of Zagreb; Faculty of Science; (Department of Physics)
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics

Abstract (english)

The scattering of electrons on impurities with internal degrees of freedom is bound to produce the signatures of the scatterer's own dynamics and results in nontrivial electronic transport properties. Previous studies of polaronic impurities in low-dimensional structures, like molecular junctions and one-dimensional nanowire models, have shown that perturbative treatments cannot account for a complex energy dependence of the scattering cross section in such systems. Here we derive the exact solution of polaronic impurities shaping the electronic transport in bulk (3D) systems. In the model with a short-ranged electron-phonon interaction, we solve for and sum over all elastic and inelastic partial cross sections, abundant in resonant features. The temperature dependence of the charge mobility shows the power-law dependence, μ(T)∝T^−ν, with ν being highly sensitive to impurity parameters. The latter may explain nonuniversal power-law exponents observed experimentally, e.g., in high-quality organic molecular semiconductors.

• Keywords (english): polaronic impurities; transport
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Physical review. B.
• Numbering: vol. 102, no. 24, 241111(R)
• p-ISSN: 2469-9950
• DOI: https://doi.org/10.1103/PhysRevB.102.241111
• URN:NBN: urn:nbn:hr:217:793160
• Publication: 2020
• Project: Number: IP-2016-06-7258; Title (croatian): Fizika mnogočestičnih sustava - iskorištavanje svijeta kompleksnosti; Acronym: COMPLEX_ORBIS; Leader: Osor-Slaven Barišić; Jurisdiction: Croatia; Funding stream: IP
• Document URL: http://bib.irb.hr/1098778
• Type of resource: Text
• Access conditions: Open access
• Public note: © 2020 American Physical Society. Received 31 July 2020; Revised 19 November 2020; Accepted 30 November 2020; Published 17 December 2020.
• Created on: 2023-04-03 19:58:40