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DOE OSTI · 1925123

Systems and methods for superconducting quantum refrigeration

Jordan, Andrew N.·Giazotto, Francesco·Manikandan, Sreenath K.
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Abstract

A heat transfer device and method are disclosed. The device includes a working region (i.e., working substance) made from a first superconducting material having a superconducting state and a normal state when magnetized. The first superconducting material has a first energy gap while in the superconducting state. A substrate (i.e., cold reservoir) is connected to the working region at a first tunnel junction. The substrate may be a metallic substrate. A heat sink (i.e., hot reservoir) is connected to the working region at a second tunnel junction. The heat sink is made from a second superconducting material having a second energy gap that is larger than the first energy gap. In a particular example, the heat transfer device includes a metallic substrate is made from Copper, a working region made from Tantalum, a heat sink made from Niobium, and the first and second tunnel junctions are made from Tantalum Oxide.

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71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

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BibTeXRIS

Jordan, Andrew N., Giazotto, Francesco, Manikandan, Sreenath K.. 2022-09-20. Systems and methods for superconducting quantum refrigeration. https://www.osti.gov/biblio/1925123

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