Drag effect in double-layer dipolar fermi gases
Author
Tanatar, Bilal
Renklioğlu, Başak
Öktel, M. Özgür
Date
2014Source Title
Journal of Physics: Conference Series
Print ISSN
1742-6588
Publisher
IOP
Volume
568
Pages
1 - 5
Language
English
Type
Conference PaperItem Usage Stats
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Abstract
We consider two parallel layers of two-dimensional spin-polarized dipolar Fermi gas without any tunneling between the layers. The effective interactions describing screening and correlation effects between the dipoles in a single layer (intra-layer) and across the layers (interlayer) are modeled within the Hubbard approximation. We calculate the rate of momentum transfer between the layers when the gas in one layer has a steady flow. The momentum transfer induces a steady flow in the second layer which is assumed initially at rest. This is the drag effect familiar from double-layer semiconductor and graphene structures. Our calculations show that the momentum relaxation time has temperature dependence similar to that in layers with charged particles which we think is related to the contributions from the collective modes of the system.
Keywords
Charged particlesDrag
Electron gas
Low temperature effects
Momentum transfer
Steady flow
Temperature distribution
Collective modes
Correlation effect
Double layers
Effective interactions
Momentum relaxation
Single layer
Spin-polarized
Temperature dependence
Fermions