Electronic stopping power in LiF from first principles

Pruneda, J. M. and Sanchez-Portal, D. and Arnau, A. and Juaristi, J. I. and Artacho, E. (2007) Electronic stopping power in LiF from first principles. Physical Review Letters, 99 (23). pp. 235501-4. DOI 10.1103/PhysRevLett.99.235501

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Abstract

Using time-dependent density-functional theory we calculate from first principles the rate of energy transfer from a moving proton or antiproton to the electrons of an insulating material, LiF. The behavior of the electronic stopping power versus projectile velocity displays an effective threshold velocity of 0:2 a:u: for the proton, consistent with recent experimental observations, and also for the antiproton. The calculated proton/antiproton stopping-power ratio is 2:4 at velocities slightly above the threshold (v 0:4 a:u:), as compared to the experimental value of 2.1. The projectile energy loss mechanism is observed to be extremely local.

Item Type:	Article
Uncontrolled Keywords:	2007 AREP IA55 2007 P
Subjects:	03 - Mineral Sciences
Divisions:	03 - Mineral Sciences
Journal or Publication Title:	Physical Review Letters
Volume:	99
Page Range:	pp. 235501-4
Identification Number:	10.1103/PhysRevLett.99.235501
Depositing User:	Sarah Humbert
Date Deposited:	16 Feb 2009 13:03
Last Modified:	23 Jul 2013 10:08
URI:	http://eprints.esc.cam.ac.uk/id/eprint/612

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