Path-Dependent Supercooling of the 3He Superfluid A − B Transition

Dmytro Lotnyk, Anna Eyal, Nikolay Zhelev, Abhilash Sebastian, Yefan Tian, Aldo Chavez, Eric Smith, John Saunders, Erich Mueller, Jeevak Parpia (Corresponding Author)

Research output: Contribution to journalArticleScientificpeer-review

Abstract

We examine the discontinuous first-order superfluid 3He A to Β transition in the vicinity of the polycritical point (2.232 mK and 21.22 bar). We find path-dependent transitions: cooling at fixed pressure yields a well-defined transition line in the temperature-pressure plane, but this line can be reliably crossed by depressurizing at nearly constant temperature after transiting Tc at a higher pressure. This path dependence is not consistent with any of the standard Β-phase nucleation mechanisms in the literature. This symmetry breaking transition is a potential simulator for first order transitions in the early Universe.
Original languageEnglish
Article number215301
JournalPhysical Review Letters
Volume126
Issue number21
DOIs
Publication statusPublished - 25 May 2021
MoE publication typeA1 Journal article-refereed

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