Volume 75, Number 5, September 2006
|Page(s)||791 - 796|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||21 July 2006|
Fast-projectile stopping power of two-dimensional strongly correlated electron liquids
Departament de Matemàtica Aplicada, Universitat Politècnica de València 46022 Valencia, Spain
Accepted: 10 July 2006
We study the high-velocity-projectile limit of the polarizational contribution to the in-plane stopping power in a strongly coupled two-dimensional electron liquid. The dielectric formalism based on the method of moments is employed. The frequency moments of the loss function are calculated using the model Hamiltonian including the two-dimensional Coulomb interaction potential proportional to the inverse power of k. We prove that the leading term of the high-velocity asymptote, as in the random-phase approximation, is not affected by correlations.
PACS: 73.20.Mf – Collective excitations (including excitons, polarons, plasmons and other charge-density excitations) / 52.27.Gr – Strongly-coupled plasmas / 52.40.Mj – Particle beam interactions in plasmas
© EDP Sciences, 2006
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