arXiv subjects

A. Monastra

Publications and source records attributed to A. Monastra.

2 recordsLinked to original sources

arXiv2022

Thermal diode assisted by geometry under cycling temperature

Technological progress in electronics usually requires their use in increasingly aggressive environments, such as rapid thermal cycling and high power density. Thermal diodes appear as excellent candidates to thermally protect critical electronic components and ensure durability and reliability. We model the heat transport across a square plate with a hole subjected to an oscillating external temperature, such spatial and temporal symmetries are broken. We find rectification of the heat current that strongly depends on the frequency and the geometry of the hole. This system behaves as a thermal diode that could be used as part of a thermal architecture to dissipate heat under cycling temperature conditions.

physics.comp-ph↗

arXiv2000

Correlations and fluctuations of a confined electron gas

The grand potential $Ω$ and the response $R = - \partial Ω/\partial x$ of a phase-coherent confined noninteracting electron gas depend sensitively on chemical potential $μ$ or external parameter $x$. We compute their autocorrelation as a function of $μ$, $x$ and temperature. The result is related to the short-time dynamics of the corresponding classical system, implying in general the absence of a universal regime. Chaotic, diffusive and integrable motions are investigated, and illustrated numerically. The autocorrelation of the persistent current of a disordered mesoscopic ring is also computed.

cond-mat.mes-hall↗