First-principles calculations of the dielectric function of Al = 알미늄에 대한 유전상수의 제일원리 계산

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dc.contributor.authorLee, Keun-Ho-
dc.contributor.author이근호-
dc.date.accessioned2011-12-14T07:52:03Z-
dc.date.available2011-12-14T07:52:03Z-
dc.date.issued1993-
dc.identifier.urihttp://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=68287&flag=dissertation-
dc.identifier.urihttp://hdl.handle.net/10203/48299-
dc.description학위논문(석사) - 한국과학기술원 : 물리학과, 1993.2, [ [ii], 35 p. ]-
dc.description.abstractThe frequency and wave-vector dependent dielectric function of Al is calculated, which is formulated by the random-phase approximation. The local-field effects are not considered. An ab initio pseudopotential method is used to calculate the energy band structres of Al. A linear tetrahedron method is employed to perform the reciprocal space integration. The real and imaginary parts of the dielectric function are obtained through direct calculations. For the wave-vectors q = (0,0,0), (0.25,0,0), (0.5,0,0) and (0.75,0,($2 \pi /a$), the calculations are done for energies up to about 40 eV. We also examine the plasmon modes from the results of calculations for $\varepsilon(q, \omega$). The dependences of the plasmon frequency and the static dielectric function on the wave-vector q are compared with those obtained from the Lindhard formula. The accuracy of the calculations is tested using the Kramers-Kronig relations and the sum rules.eng
dc.languageeng-
dc.publisher한국과학기술원-
dc.titleFirst-principles calculations of the dielectric function of Al = 알미늄에 대한 유전상수의 제일원리 계산-
dc.typeThesis(Master)-
dc.identifier.CNRN68287/325007-
dc.description.department한국과학기술원 : 물리학과, -
dc.identifier.uid000911407-
dc.contributor.localauthorLee, Keun-Ho-
dc.contributor.localauthor이근호-
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PH-Theses_Master(석사논문)
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