QFS 2016 Book of Abstracts

Abstracts

O1.12 Non-isothermal Physico-Chemical Processes in Superfluid Helium Gordon Eugene B. Russian Academy of Sciences, Institute of Problems of Chemical Physics, Chernogolovka Moscow region, 142432 Russia Our experiments show that the limiting heat flow, which spoiled the fast removal of heat from a hot body by the second sound waves, exists in nanoscale as well. Moreover, this limit is exceeded in practically any exothermic process between the particles introduced into He II. In particular the merging of small cold clusters of any metal leads to the molten clusters appearance. Because the coagulation occurs mainly in quasi-1D quantized vortices the thin nanowires with dense-packed structure are its product, the perfect microspheres with atomically smooth surface can be formed at high concentrations of metal. The noticeable overheating has been also observed in the atom-molecular processes. P1.1 Phase diagram of a time-reversal symmetry-breaking state in d-wave superconducting films N. Miyawaki and S. Higashitani Graduate School of Integrated Arts and Sciences, Hiroshima University, Japan We report a theoretical study of the phase diagram of unconventional superconducting films. This study is motivated by a recent theoretical work on d-wave superconducting films, in which a novel ground state with broken time-reversal (BTR) symmetry was predicted. In this previous theory, the system is assumed to have a cylindrical Fermi surface. We report anisotropic Fermi surface effects on the phase transition from the conventional BCS state to the BTR state. We also discuss the possibility of the stripe phase in d-wave superconducting films.

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