Heat capacity of cylindrically confined helium: theoretical predictions versus experimental data

• Veröffentlicht in: Физика низких температур
• Datum: 2004
• ISSN: 0132-6414
• 1. Verfasser: Chalyy, K.A.
• Format: Artikel
• Sprache: Englisch
• Veröffentlicht: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2004
• Schlagworte: Квантовые жидкости и квантовые кpисталлы
• Online Zugang: https://nasplib.isofts.kiev.ua/handle/123456789/119845
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Zitieren: Heat capacity of cylindrically confined helium: theoretical predictions versus experimental data / K.A. Chalyy // Физика низких температур. — 2004. — Т. 30, № 9. — С. 913–919. — Бібліогр.: 36 назв. — англ.

Different systems which could exhibit size-dependent second-order phase transitions have been
 studied experimentally during the last quarter century. The validity of the proposed theoretical results
 is verified by comparing high-resolution experimental data with an analytical evaluation of
 the heat capacity of confined 4He. It is shown that the theoretical approach to the problem of the
 finite-size effect gives results that reasonably match the experimental data over a wide range of
 system sizes, from tens of nanometers up to a few micrometers for the cylindrical type of confinement
 geometry. The dependences of the shift of transition temperature on the cylinder size and
 boundary conditions are analyzed. The agreement of the results with finite-size scaling theory is
 confirmed.