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Measuring the Kapitza Resistance between a Passivated Semiconductor and Liquid Helium

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arxiv 2312.03713 v1 pith:PT24IDHL submitted 2023-11-16 cond-mat.mtrl-sci

Measuring the Kapitza Resistance between a Passivated Semiconductor and Liquid Helium

classification cond-mat.mtrl-sci
keywords heliumkapitzaliquidresistancesemiconductoradditionalbarriercooling
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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In this paper, we describe an experimental investigation into the effect of passivation layer thickness on heat dissipation between a quartz substrate and liquid helium. We have observed that by depositing SiN from 0 to 240 nm, the Kapitza resistance increases by 0.0365 m^2.K/W per nanometer more than for an unpassivated semiconductor. We hypothesize that this increase in Kapitza resistance represents an additional barrier to the cooling of semiconductor devices in liquid helium.

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