Extension of on-chip thermometry of metal strips toward sub-10 K regime

Jiabin Qiao, Ding Zhang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

One widely employed method to study thermoelectric effects in nano- and mesoscopic systems is by utilizing on-chip metal strips. However, the standard technique loses sensitivity in the sub-Kelvin temperature regime because the resistance of metal strips saturates. Here, we report a possible solution that can extend the working point from the conventional window (10 to 300 K) down to temperatures below 10 K. This method takes advantage of the unexpected resistance up-turn at T < 10 K in gold strips, presumably due to the Kondo effect. As a demonstration, we apply this technique to study a NbSe2 flake in the superconducting regime (<6 K).

Original languageEnglish
Article number173507
JournalApplied Physics Letters
Volume120
Issue number17
DOIs
Publication statusPublished - 25 Apr 2022
Externally publishedYes

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