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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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