Specific heat measurement set-up for quench condensed thin superconducting films

TitleSpecific heat measurement set-up for quench condensed thin superconducting films
Publication TypeJournal Article
Year of Publication2014
AuthorsPoran, S, Molina-Ruiz, M, Gérardin, A, Frydman, A, Bourgeois, O
JournalReview of Scientific Instruments
KeywordsHeat capacity, Lead, Quantum phase transitions, Superconducting transitions, Thermometers

We present a set-up designed for the measurement of specific heat of very thin or ultra-thin quench condensed superconducting films. In an ultra-high vacuum chamber, materials of interest can be thermally evaporated directly on a silicon membrane regulated in temperature from 1.4 K to 10 K. On this membrane, a heater and a thermometer are lithographically fabricated, allowing the measurement of heat capacity of the quench condensed layers. This apparatus permits the simultaneous thermal and electrical characterization of successively deposited layers in situ without exposing the deposited materials to room temperature or atmospheric conditions, both being irreversibly harmful to the samples. This system can be used to study specific heat signatures of phase transitions through the superconductor to insulator transition of quench condensed films.

Short TitleRev. Sci. Instrum. 85, 053903 (2014)
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