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Energy transfer in a bilayer Fermi gas in the non‐linear regime
Author(s) -
Renklioglu B.,
Oktel M. Ö.,
Tanatar B.
Publication year - 2017
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.201600501
Subject(s) - condensed matter physics , dipole , bilayer , quantum tunnelling , range (aeronautics) , physics , molecular physics , chemistry , materials science , quantum mechanics , membrane , biochemistry , composite material
We consider a bilayer system of two‐dimensional spin‐polarized dipolar Fermi gas without any tunneling between the layers. We calculate the energy transfer rate between the layers in the non‐linear regime where the layers have a relative velocity, as a function of temperature and drift velocities of the particles of the system in each layer. The effective interactions describing the correlation effects and screening between the dipoles are obtained by the Hubbard approximation in a single layer (intra‐layer), and the random‐phase approximation (RPA) across the layers (inter‐layer). The energy transfer arises from the long‐range nature of dipolar interactions between the particles of the system. As a result of the increasing drift velocities, the non‐linear heat transfer between the layers remarkably increases and the system reaches its equilibrium at lower temperatures. Our calculations show that cooling with dipolar interactions without any material contact can be utilized to cool the ultracold dipolar systems.