Possible Thermodynamical Phase Slips in Superfluid 4He Confined in a 2.5-nm Channel of FSM

Autor:	Kento Taniguchi, Junko Taniguchi, Masaru Suzuki, Kousuke Kanno
Rok vydání:	2020
Předmět:	Condensed Matter::Quantum Gases Materials science Condensed matter physics Condensed Matter::Other Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics 010305 fluids & plasmas Superfluidity Density based Phase (matter) 0103 physical sciences Thermal General Materials Science Area density 010306 general physics Excitation Communication channel
Zdroj:	Journal of Low Temperature Physics. 201:139-145
ISSN:	1573-7357 0022-2291
Popis:	We have measured the superfluid response of 4He confined in a 2.5-nm channel and have compared with that of 4He in a 2.8-nm channel. In the 2.5-nm channel, the superfluid growth is gradual regardless of areal density and pressure. In contrast, 4He in a 2.8-nm channel shows a sharp superfluid onset at low pressure, although it shows a gradual temperature dependence with increasing pressure. The gradual temperature dependence in both channels is well fitted to the function of static superfluid density based on the Tomonaga–Luttinger liquid model. It indicates that the thermal excitation of phase slips plays an important role in the observed superfluid response.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::130e73d7256f2457703a9d875343174d https://doi.org/10.1007/s10909-020-02355-z Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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