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Phase Transition of Levitating Polarons
Author(s) -
Pokatilov E. P.,
Beril S. I.,
Frenk M. A.
Publication year - 1991
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221680120
Subject(s) - polaron , condensed matter physics , levitation , polar , phase transition , substrate (aquarium) , materials science , phase (matter) , liquid helium , physics , chemistry , helium , atomic physics , quantum mechanics , electron , magnet , oceanography , geology
Abstract The binding energy is calculated of a polaron above the liquid‐helium film placed on the polar substrate. It is shown, that in the case of thick enough films the weakly‐coupled polaron state, which is not localized in the plane of film surface, possesses the deeper energy level as compared with the strongly‐coupled and localized polaronic state. However, for thin films the inverse order in the arrangement of levels occurs. From this fact it is concluded, that a polaronic phase transition is possible when decreasing the film thickness.