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Condensed Matter
Volume 10
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10.3390/condmat10010009
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Temperature Dependence of the Dynamical and DC Conductivity in 2D Dirac Systems: Self-Consistent Random-Phase-Approximation Approach

by
Ivan Kupčić
* and
Patrik Papac
Department of Physics, Faculty of Science, University of Zagreb, Bijenička 32, 10000 Zagreb, Croatia
*
Author to whom correspondence should be addressed.
Condens. Matter 2025, 10(1), 9; https://doi.org/10.3390/condmat10010009 (registering DOI)
Submission received: 15 December 2024 / Revised: 16 January 2025 / Accepted: 20 January 2025 / Published: 1 February 2025
(This article belongs to the Special Issue Selected Papers from the International Conference on Quantum Materials and Technologies (ICQMT2024))
Versions Notes

Abstract

We studied relaxation processes in heavily doped two-dimensional Dirac systems associated with electron scattering by acoustic and optical phonons and by static disorder. The frequency dependence of the real and imaginary parts of the relaxation function is calculated for different temperatures. The two-component low-frequency dynamical conductivity is found to be strongly dependent on temperature. At low temperatures, the imaginary part of the zero-frequency relaxation function and the DC resistivity are characterized by the scaling law aTx with the exponent x between 2.5 and 3.
Keywords: quantum transport equations; memory function; dynamical conductivity; generalized Drude formula; 2D Dirac systems quantum transport equations; memory function; dynamical conductivity; generalized Drude formula; 2D Dirac systems

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MDPI and ACS Style

Kupčić, I.; Papac, P. Temperature Dependence of the Dynamical and DC Conductivity in 2D Dirac Systems: Self-Consistent Random-Phase-Approximation Approach. Condens. Matter 2025, 10, 9. https://doi.org/10.3390/condmat10010009

AMA Style

Kupčić I, Papac P. Temperature Dependence of the Dynamical and DC Conductivity in 2D Dirac Systems: Self-Consistent Random-Phase-Approximation Approach. Condensed Matter. 2025; 10(1):9. https://doi.org/10.3390/condmat10010009

Chicago/Turabian Style

Kupčić, Ivan, and Patrik Papac. 2025. "Temperature Dependence of the Dynamical and DC Conductivity in 2D Dirac Systems: Self-Consistent Random-Phase-Approximation Approach" Condensed Matter 10, no. 1: 9. https://doi.org/10.3390/condmat10010009

APA Style

Kupčić, I., & Papac, P. (2025). Temperature Dependence of the Dynamical and DC Conductivity in 2D Dirac Systems: Self-Consistent Random-Phase-Approximation Approach. Condensed Matter, 10(1), 9. https://doi.org/10.3390/condmat10010009

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