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A quantum-dot refrigerator (1993)

Edwards, H. L. ; Niu, Q. ; de Lozanne, A. L.

Woodbury, NY : American Institute of Physics (AIP)

Applied Physics Letters 63 (1993), S. 1815-1817

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ISSN: 1077-3118

Source: AIP Digital Archive

Topics: Physics

Notes: A cryogenic refrigeration scheme is presented which utilizes the discrete energy levels of quantum dots to customize the electronic Fermi–Dirac distribution, cooling a small but macroscopic reservoir to far below the ambient temperature. Several physical limitations of this scheme are discussed within the context of a model device constructed from a two-dimensional electron gas. These are explored in a simple example where, at an ambient operating temperature of 150 mK, this quantum-dot refrigerator can achieve a cooling power of 1 μW/cm2, a base temperature of 10 mK, and a cooling efficiency of 35%.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.110672

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