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      Drag effect in double-layer dipolar fermi gases

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      Author
      Tanatar, Bilal
      Renklioğlu, Başak
      Öktel, M. Özgür
      Date
      2014
      Source Title
      Journal of Physics: Conference Series
      Print ISSN
      1742-6588
      Publisher
      IOP
      Volume
      568
      Pages
      1 - 5
      Language
      English
      Type
      Conference Paper
      Item 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 particles
      Drag
      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
      Permalink
      http://hdl.handle.net/11693/27652
      Published Version (Please cite this version)
      http://dx.doi.org/10.1088/1742-6596/568/1/012021
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      • Department of Physics 2299
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