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A Deterministic Solution of the Wigner Transport Equation with Infinite Correlation Length : 무한한 상관길이를 가지는 위스너 수송 방정식의 결정론적 해

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dc.contributor.advisor최우영-
dc.contributor.author김경연-
dc.date.accessioned2022-12-29T07:37:56Z-
dc.date.available2022-12-29T07:37:56Z-
dc.date.issued2022-
dc.identifier.other000000173239-
dc.identifier.urihttps://hdl.handle.net/10371/187711-
dc.identifier.urihttps://dcollection.snu.ac.kr/common/orgView/000000173239ko_KR
dc.description학위논문(박사) -- 서울대학교대학원 : 공과대학 전기·정보공학부, 2022. 8. 최우영.-
dc.description.abstractWe propose a new discrete formulation of the Wigner transport equation (WTE) with infinite correlation length of potentials. Since the maximum correlation length is not limited to a finite value, there is no uncertainty in the simulation results, and Wigner-Weyl transformation is unitary in our expression. For general and efficient simulation, the WTE is solved self-consistently with the Poisson equation through the finite volume method and the fully coupled Newton-Raphson scheme. By applying the proposed model to resonant tunneling diodes and double gate MOSFET, transient and steady-state simulation results including scattering effects are shown.-
dc.description.abstract본 연구에서는 무한한 상관 길이를 가지는 위그너 수송 방정식의 새로운 수치해석적 풀이법을 제시하였다. 최대 상관 길이가 한정된 값으로 제한되지 않기 때문에, 시뮬레이션 결과에 불확실성이 발생하지 않으며, 제안된 표현법에서는 Wigner-Weyl 변환이 unitary하다. 일반적이고 효율적인 시뮬레이션을 위해, 위그너 수송 방정식을 푸아송 방정식과 유한 체적법과 뉴턴-랩슨 방식을 통해 self-consistent하게 풀었다. 제안된 모델을 resonant tunneling diode와 double gate MOSFET에 적용하여, 산란효과를 고려한 동적 그리고 정적 시뮬레이션 결과를 보여주었다.-
dc.description.tableofcontentsChapter 1 Introduction 1
1-1 Various models for device simulation 1
1-2 Numerical problems in solving WTE 5

Chapter 2 Simulation methods 10
2-1 WTE with infinite correlation length 10
2-2 Numerical Methods 13
2-3 Multi-dimensional Simulation Methods 23

Chapter 3 Simulation methods 26
2-1 Simulation results according to the correlation length 26
2-2 Simulation for resonant tunneling diode 30
2-3 Simulation for double gate MOSFET 51

Chapter 4 Conclusion 70

Appendix 72
A-1 Numerical integration method of the nonlocal potential terms 72
A-2 2D electron density and electric potential results 75
A-3 Wigner function for each subband 78

References 85

Abstract 92
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dc.format.extentiii, 93-
dc.language.isoeng-
dc.publisher서울대학교 대학원-
dc.subjectWignerequation-
dc.subjectQuantumtransport-
dc.subjectTCAD-
dc.subject위그너방정식-
dc.subject양쟈전송-
dc.subject티캐드(TCAD)시뮬레이션-
dc.subject.ddc621.3-
dc.titleA Deterministic Solution of the Wigner Transport Equation with Infinite Correlation Length-
dc.title.alternative무한한 상관길이를 가지는 위스너 수송 방정식의 결정론적 해-
dc.typeThesis-
dc.typeDissertation-
dc.contributor.AlternativeAuthorKyoung Yeon Kim-
dc.contributor.department공과대학 전기·정보공학부-
dc.description.degree박사-
dc.date.awarded2022-08-
dc.identifier.uciI804:11032-000000173239-
dc.identifier.holdings000000000048▲000000000055▲000000173239▲-
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