Investigation of heterostructure characteristics from AB initio principles

Heterostructures offers vast opportunities for novel experimentation on emerging phenomena due to various symmetry-breaking patterns at the interfacial structures. These effects cannot be observed in bulk constituents and as such make these materials popular candidates for intense research in the re...

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Main Author: Chan, Yong Ming
Other Authors: Wang Xiao
Format: Final Year Project
Language:English
Published: 2019
Subjects:
Online Access:http://hdl.handle.net/10356/77208
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-772082023-02-28T23:13:57Z Investigation of heterostructure characteristics from AB initio principles Chan, Yong Ming Wang Xiao School of Physical and Mathematical Sciences DRNTU::Science::Physics::Atomic physics::Solid state physics Heterostructures offers vast opportunities for novel experimentation on emerging phenomena due to various symmetry-breaking patterns at the interfacial structures. These effects cannot be observed in bulk constituents and as such make these materials popular candidates for intense research in the recent years. Much experimental work has been done to shed significant amount of insights on these phenomena, but little has been done to approach the research field from ab initio atomistic principles. This thesis project aims to gradually explore various spin lattice models to simulate a bi-layer heterostructure’s magnetization obtained from experimental results by constructing algorithms using Python. The simulations relies on Monte Carlo methods, statistical and atomistic level theories and seeks to ultimately explain the experimental phenomena from ab initio principles. The gradual exploration serves as a foundation to build up to the Heisenberg spin lattice model with interfacial antiferromagnetic and Dzyaloshinskii-Moriya interactions. From the findings, we are however unable to draw conclusive remarks on the effect of atomistic principles explored on experimental phenomena. Despite the limitations, findings from this project remain consequential, with the potential for future work building on to current work due to the excellent flexibility and customizability of a self-developed Python algorithm. Bachelor of Science in Applied Physics 2019-05-15T13:12:21Z 2019-05-15T13:12:21Z 2019 Final Year Project (FYP) http://hdl.handle.net/10356/77208 en 59 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Science::Physics::Atomic physics::Solid state physics
spellingShingle DRNTU::Science::Physics::Atomic physics::Solid state physics
Chan, Yong Ming
Investigation of heterostructure characteristics from AB initio principles
description Heterostructures offers vast opportunities for novel experimentation on emerging phenomena due to various symmetry-breaking patterns at the interfacial structures. These effects cannot be observed in bulk constituents and as such make these materials popular candidates for intense research in the recent years. Much experimental work has been done to shed significant amount of insights on these phenomena, but little has been done to approach the research field from ab initio atomistic principles. This thesis project aims to gradually explore various spin lattice models to simulate a bi-layer heterostructure’s magnetization obtained from experimental results by constructing algorithms using Python. The simulations relies on Monte Carlo methods, statistical and atomistic level theories and seeks to ultimately explain the experimental phenomena from ab initio principles. The gradual exploration serves as a foundation to build up to the Heisenberg spin lattice model with interfacial antiferromagnetic and Dzyaloshinskii-Moriya interactions. From the findings, we are however unable to draw conclusive remarks on the effect of atomistic principles explored on experimental phenomena. Despite the limitations, findings from this project remain consequential, with the potential for future work building on to current work due to the excellent flexibility and customizability of a self-developed Python algorithm.
author2 Wang Xiao
author_facet Wang Xiao
Chan, Yong Ming
format Final Year Project
author Chan, Yong Ming
author_sort Chan, Yong Ming
title Investigation of heterostructure characteristics from AB initio principles
title_short Investigation of heterostructure characteristics from AB initio principles
title_full Investigation of heterostructure characteristics from AB initio principles
title_fullStr Investigation of heterostructure characteristics from AB initio principles
title_full_unstemmed Investigation of heterostructure characteristics from AB initio principles
title_sort investigation of heterostructure characteristics from ab initio principles
publishDate 2019
url http://hdl.handle.net/10356/77208
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