{"title":"Majorana Fermions as Andreev Bound States in Superfluid \\(^3\\)He-B","authors":"Yury Bunkov","doi":"10.1007/s10909-024-03159-1","DOIUrl":null,"url":null,"abstract":"<div><p>In this article in memory of academician A.F. Andreev, we consider the results of experiments in superfluid <span>\\(^{3}\\)</span>He-B at ultralow temperatures. These experiments directly demonstrate the existence of gapless Majorana quasiparticles, which appear as Andreev bound states at the boundary of superfluid <span>\\(^3\\)</span>He-B (Silaev and Volovik in JETP 119:1042, 2014). Precision measurements of the heat capacity of superfluid <span>\\(^3\\)</span>He-B showed that at a temperature of 0.12 mK, Majorana fermions can account for up to <span>\\(50\\%\\)</span> of the heat capacity of <span>\\(^3\\)</span>He-B in our experimental conditions.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"217 1-2","pages":"254 - 263"},"PeriodicalIF":1.1000,"publicationDate":"2024-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Low Temperature Physics","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1007/s10909-024-03159-1","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, APPLIED","Score":null,"Total":0}
引用次数: 0
Abstract
In this article in memory of academician A.F. Andreev, we consider the results of experiments in superfluid \(^{3}\)He-B at ultralow temperatures. These experiments directly demonstrate the existence of gapless Majorana quasiparticles, which appear as Andreev bound states at the boundary of superfluid \(^3\)He-B (Silaev and Volovik in JETP 119:1042, 2014). Precision measurements of the heat capacity of superfluid \(^3\)He-B showed that at a temperature of 0.12 mK, Majorana fermions can account for up to \(50\%\) of the heat capacity of \(^3\)He-B in our experimental conditions.
期刊介绍:
The Journal of Low Temperature Physics publishes original papers and review articles on all areas of low temperature physics and cryogenics, including theoretical and experimental contributions. Subject areas include: Quantum solids, liquids and gases; Superfluidity; Superconductivity; Condensed matter physics; Experimental techniques; The Journal encourages the submission of Rapid Communications and Special Issues.