Dicluster stopping power of a two-dimensionalelectron gas at high velocities

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Abstract

  In this paper, we calculate the dicluster stopping power of a two dimensional electron gas based on the dielectric function formalism at high velocities and temperatures. The dielectric function is derived by using the method of moments in which the effects of correlation have been included, and from that we obtain the dicluster stopping power in terms of the inter-ion spacing for different values of coupling coefficient, degeneracy parameter and velocity of projectile. The results show that with decreasing the coupling coefficient or increasing the degeneracy parameter, the Friedel oscillations appear at shorter inter-ion distances and quickly damped at higher velocities. Also, it is found out that the stopping power of the system is proportional to the inverse of the dicluster's velocity.   

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References

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History

  • Receive Date: 04 September 2013
  • Revise Date: 06 October 2013
  • Accept Date: 29 January 2014

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