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Local Field Correction Effect on Dicluster Stopping Power in a Strongly Coupled Two-Dimensional Electron Gas System | ||
| Journal of Sciences, Islamic Republic of Iran | ||
| مقاله 8، دوره 24، شماره 1، خرداد 2013، صفحه 81-85 اصل مقاله (502.02 K) | ||
| نوع مقاله: Original Paper | ||
| نویسندگان | ||
| T. Vazifehshenas؛ S. Saberi-Pouya | ||
| Department of Physics, Faculty of Sicences, University of Shahid Beheshti, Tehran, Islamic Republic of Iran | ||
| چکیده | ||
| We calculate the stopping power for heavy-ion diclusters moving in a strongly coupled two-dimensional electron gas system by using the local field corrected dielectric function at finite temperature. We obtain a parameterized local field correction factor based on a relation between the thermal compressibility and exchange-correlation energy in two-dimension. The interpolated parameter is derived from the Monte-Carlo data for the exchange-correlation energy of a two-dimensional electron gas system. We compare our results with those of previous calculations which used a local field factor that satisfied the compressibility sum rule in three-dimension. In general, the stopping power increases by taking into account the short-range interactions. In addition, it is found that the dicluster stopping power (in particular the uncorrelated part) obtained from our calculations is smaller than the previous work. | ||
| کلیدواژه‌ها | ||
| Stopping power؛ Dicluster؛ Local field correction؛ Finite temperature؛ Monte-Carlo | ||
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