Nonadiabatic electron heat pump
Miguel Rey, Michael Strass, Sigmund Kohler, Peter H\"anggi and, Fernando Sols
TL;DR
This paper proposes a quantum heat pump mechanism that extracts heat from metals using energy-selective electron transmission through an asymmetric resonant structure driven by AC signals, potentially reaching quantum-limited cooling.
Contribution
It introduces a novel nonadiabatic electron heat pump concept utilizing asymmetric resonant structures and analyzes conditions for optimal cooling performance.
Findings
Can operate at zero net current
Cooling rate approaches quantum limit under certain conditions
Numerical results demonstrate feasibility with specific heterostructures
Abstract
We investigate a mechanism for extracting heat from metallic conductors based on the energy-selective transmission of electrons through a spatially asymmetric resonant structure subject to ac driving. This quantum refrigerator can operate at zero net electronic current as it replaces hot by cold electrons through two energetically symmetric inelastic channels. We present numerical results for a specific heterostructure and discuss general trends. We also explore the conditions under which the cooling rate may approach the ultimate limit given by the quantum of cooling power.
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