The properties of thin ³He-⁴He superfluid films

• Дата: 2001
• Автори: Anderson, R.H., Miller, M.D.
• Формат: Стаття
• Мова: English
• Опубліковано: Інститут фізики конденсованих систем НАН України 2001
• Назва видання: Condensed Matter Physics
• Онлайн доступ: https://nasplib.isofts.kiev.ua/handle/123456789/120440
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: The properties of thin ³He-⁴He superfluid films / R.H. Anderson, M.D. Miller // Condensed Matter Physics. — 2001. — Т. 4, № 2(26). — С. 335-348. — Бібліогр.: 22 назв. — англ.

Thin ³He-⁴He physisorbed films are examples of strongly interacting, quasi two-dimensional, fermion-boson mixture systems. The properties of the mixture systems can be tuned by changing the substrate or the ⁴He film thickness. In this paper, we discuss the ground-state and magnetic groundstate of the ³He subsystem and also the interactions between the excitations of the ⁴He superfluid film with the single-particle excitations of the adsorbed ³He. The ground-state of the ³He system is calculated using a model for the ³He-³He effective interaction in the static ⁴He film which explicitly includes the effective interaction due to exchange of virtual film excitations (ripplons). This latter effective interaction is evaluated in the random phase approximation and is shown not to be capable of causing the ³He system to be self-bound. We discuss the evidence from magnetization, third sound and heat capacity measurements that the ³He first transverse excited state is being occupied prior to monolayer completion