Vacancy-induced transitions in hcp3He

✍ Scribed by P. Chaddah

• Book ID: 104627775
• Publisher: Springer US
• Year: 1980
• Tongue: English
• Weight: 222 KB
• Volume: 39
• Category: Article
• ISSN: 0022-2291
• DOI: 10.1007/bf00118070

✦ Synopsis

It is known from the work of Nagaoka that in hcp or fcc SHe a ferromagnetic" alignment of nuclear spins does not give the lowest vacancy energy. We show that an ordered spin structure has a lower vacancy energy than either random or ferromagnetic structures. We study the possibility of vacancies inducing a transition to this spin structure, and of vacancies forming polarons. The latter is found to be more likely, and we estimate the fraction of vacancies forming polarons as a function of temperature. We briefly comment on the case of a vacancy in crystals of 4He with SHe impurity.