| dc.contributor | 應物所 | en_US |
| dc.creator (作者) | 楊志開 | zh_TW |
| dc.creator (作者) | Cheng,Yi-Chen;Huang,Hsin-Yi;Yang,Chih-Kai | en_US |
| dc.date (日期) | 1995 | en_US |
| dc.date.accessioned | 25-Sep-2014 11:49:59 (UTC+8) | - |
| dc.date.available | 25-Sep-2014 11:49:59 (UTC+8) | - |
| dc.date.issued (上傳時間) | 25-Sep-2014 11:49:59 (UTC+8) | - |
| dc.identifier.uri (URI) | http://nccur.lib.nccu.edu.tw/handle/140.119/70149 | - |
| dc.description.abstract (摘要) | In this paper we define a surface dielectric function for a semi-infinite electron system and a sum rule involving the imaginary part of the inverse of the surface dielectric function is derived. The sum rule has almost exactly the same form as the well-known dielectric function f-sum rule in a bulk system, with the bulk quantities replaced by the corresponding surface quantities. However there is an important difference that the surface sum rule applies to all surfaces only in the Q - 0 limit, where Q is the two-dimensional wavevector parallel to the surface. For small Q, linear and higher order terms of Q will appear in the sum rule whose coefficients may depend on the surface properties of the system considered. This is due to the fact that for Q = 0 both the surface dielectric function and the surface plasma frequency depend on the average electron density only, independent of the surface properties; however for Q # 0; the Q-dependence of the above two quantities both depend sensitively on the surface properties of the system considered. | en_US |
| dc.format.extent | 488913 bytes | - |
| dc.format.mimetype | application/pdf | - |
| dc.language.iso | en_US | - |
| dc.relation (關聯) | Chinese Journal of Physics,33(2),169-180 | en_US |
| dc.title (題名) | The Surface Dielectric Function and Its Sum Rule for a Semi-Infinite Electrou System | en_US |
| dc.type (資料類型) | article | en |
