DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Shin, Mincheol | - |
dc.contributor.advisor | 신민철 | - |
dc.contributor.author | Jeong, Woo Jin | - |
dc.date.accessioned | 2021-05-12T19:40:52Z | - |
dc.date.available | 2021-05-12T19:40:52Z | - |
dc.date.issued | 2020 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=909424&flag=dissertation | en_US |
dc.identifier.uri | http://hdl.handle.net/10203/284195 | - |
dc.description | 학위논문(박사) - 한국과학기술원 : 전기및전자공학부, 2020.2,[v, 112 p. :] | - |
dc.description.abstract | In recent years, as the channel length has been scaled to the level of several nanometers, the influence of individual atomic interactions has increased. Thus, a modeling approach at the atomic-level is necessary. However, atomic-level models such as density-functional theory and empirical tight-binding have large constraints in dealing with realistically-sized devices due to the huge computational burden. Herein, we propose an efficient scheme to systematically construct a reduced-sized, mode space Hamiltonian and applied it to nano-scale devices. The proposed method for the mode space approach extracts only the transport modes that contribute to the current within a pre-specified energy range and therby construct a reduced-sized mode space Hamiltonian. We have successively implemented the reduced transformation for the non-orthogonal Hamiltonian. Thus, highly efficient quantum-mechanical calculations based on the non-equilibrium Green’s function method are made possible. The methodology was extended for application to irregular atomic structures, and devices with impurities were simulated. | - |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | nano-scale device simulation▼adensity-functional theory▼aempirical tight-binding▼aquantum transport▼amode-space transformation | - |
dc.subject | 나노 소자 시뮬레이션▼a밀도 함수 이론▼a밀접 결합 근사 모델▼a양자 수송▼a모드 스페이스 변환 | - |
dc.title | (An) efficient methodology for atomic-level device simulations | - |
dc.title.alternative | 효율적인 원자 단위 소자 시뮬레이션을 위한 방법론 연구 | - |
dc.type | Thesis(Ph.D) | - |
dc.identifier.CNRN | 325007 | - |
dc.description.department | 한국과학기술원 :전기및전자공학부, | - |
dc.contributor.alternativeauthor | 정우진 | - |
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