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Feasibility of an analog of Andreev reflection in superfluid ⁴He

Lookup NU author(s): Emeritus Professor Yuri Sergeev

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Abstract

Andreev reflection is widely used in practical applications such as on the chip coolers and thermometers at very low temperatures as well as a powerful tool in experiments with superconductors and fermionic superfluid ³He-B, where it has been used to study quantum turbulence. Although superfluid ⁴He is the bosonic superfluid, its dispersion relation displays features similar to that of ³He-B, especially at high pressures approaching the solidification pressure, where the roton energy gap vanishes. We discuss an analog of Andreev reflection in superfluid ⁴He and suggest experiments of using it for detection of quantum turbulence.

Publication metadata

Author(s): Skrbek L, Sergeev YA

Publication type: Article

Publication status: Published

Journal: Physical Review B

Year: 2023

Volume: 108

Issue: 10

Print publication date: 05/09/2023

Acceptance date: 23/08/2023

Date deposited: 29/08/2023

ISSN (print): 2469-9950

ISSN (electronic): 2469-9969

Publisher: American Physical Society

URL: https://doi.org/10.1103/PhysRevB.108.L100502

DOI: 10.1103/PhysRevB.108.L100502

ePrints DOI: 10.57711/6gmc-nk13

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