Year: 2022
Type: article
Abstract: Clean two-dimensional Dirac systems have received a great deal of attention for being a prime candidate to observe hydrodynamical transport behavior in interacting electronic systems. This is mostly due to recent advances in the preparation of ultrapure samples with sufficiently strong interactions. In this paper we investigate the role of collective modes in the thermoelectric transport properties of those systems. We find that dynamical particle-hole pairs, plasmons, make a sizable contribution to the thermal conductivity. While the increase at the Dirac point is moderate, it becomes large towards larger doping. We suspect that this is a generic feature of ultraclean two-dimensional electronic systems, also applicable to degenerate systems.
Source: Physical Review Research
Institution: Utrecht University
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,625
OpenAlex ID: W3205434851